Omni Legion

"It doesn't matter where we come from, all that matters is we’re here and we serve our Emperor."

- Attributed to an unknown Omni Legion Battle-Brother

This Chapter's origins can be traced to the 7th Founding which occurred sometime in M34. Working primarily in the Segmentum Ultima the Omni Legion ally themselves closely with the Adeptus Mechanicus, several other Adeptus Astartes Chapters, and the Adepta Sororitas Order of the Sacred Flame.

Despite their undying loyalty to the Imperium and its people the Chapter's history has made the Inquisition suspicious of their very existence. Kept at bay thanks to the influence of the High Lords of Terra and being watched closely by their Adepta Sororitas and Mechanicus allies. The Inquisition still requests frequent examinations of the Chapter which is handled by the Magos Biologis themselves, with reports from them and the Chapter's Apothecarion. Many describe them as an armed cleanup crew for the Adeptus Mechanicus. Though they search countless systems for traces of technology lost over the millennia their primary purpose is safeguarding the Imperium and it's citizens.

Founding
Early in M34 a small Explorator Fleet from the Forge World of Roitheta was dispatched during one of the Forge World’s expeditions to find a potential STC. This specific mission took them to a world in the northern sectors of the Segmentum Ultima one which had oceans of pure ice and black mountains. This Dead World was designated Vintis. The fleet’s attention was drawn to it because of a faint signal, coming from one of the northern ends of the planet. It was difficult to determine what the signal was meant for as it didn’t appear to be a distress signal.

The Explorator 'Zubayr' landed on the planet’s surface and upon exiting his ship with a small force of Skitarii they were quickly overwhelmed by subzero temperatures that frosted their metal limbs. It didn’t take long to find a large metal door intended to welcome those as large as 10 feet. It took mere hours for Zubayr to console with the door’s machine spirit, through this exchange he knew something was very wrong with this world.

Many of the details of what happened inside is undocumented in official files, if there’s any it’s possible they’re available to only the High Lords of Terra. What is known to be inside this fortress were Astartes. In close to 200 pods they slept. Already clad in power armour, some in Mark III and others in Mark IV. Other pieces of technology from the great heresy itself, many suits of Tartaros Terminator armour and unused Contemptor-Cortus Dreadnoughts. Even a perfectly intact Gene-Seed was found in mass. One more item found inside was the one thing Explorators such as Zubayr can only pray to see once in their lifetime, an STC.

Upon returning to Roitheta a small number of the Astartes were released from their pods with the Skitarii surrounding them as they stood before “Aliya”, the Fabricator-General who looked down at the confused Marines. Days of questioning proceeded as the High Lords of Terra were informed of their existence. The High Lords were told that these Astartes were created by the Forge World as a means of defense, the truth of their discovery was kept a secret. Much like the future Steel Confessors Chapter the High Lords of Terra allowed the Forge World control of this Chapter, the conditions being things such as constant reports of their actions and detailed documents of all their campaigns. Finally granting unquestioned control of the Chapter to the High Lords themselves should they deem it necessary.

During this time a larger Explorator fleet was sent back to Vintis but more properly prepared to collect everything they could with the intention of finding similar heresy era technology or perhaps something older than that. Last contact would be many months after reaching their destination. A Space Marine Chapter located in the sector was sent to investigate, the reports that returned were disturbing. The Explorator fleet’s remains were hardly husks as the ships were torn apart and gutted. Blown to pieces and everything that wasn’t the framework was gone. That wasn’t the strangest part. Vintis was also gone. Vanished. An entire planet as though it never existed.

By the time the 7th Founding neared it would be determined that the Forge World of Roithea would serve as the Chapter’s supplier for weapons and vehicles. Production for the world boomed and they received additional resources from nearby systems to aid in production ranging from a bolt pistol to mighty Battle Barge. The High Lords of Terra made the decision to have this new Chapter dubbed “The Omni Legion” operate in the Segmentum Ultima. Their primary duty begun with the pursuit of technology in the same way as the Explorators. All the while remaining on standby and prepared to go to battle at a moment's notice.

Taking a small fleet of a single Battle Barge and six Dauntless-class Light Cruiser this new Formation which would eventually become the Chapter's 1st Formation took to the stars to find a recruitment world that would host their Fortress-Monastery.

Tallon Prime
Hosted the Chapter and their Fortress-Monastery from the year 513.M34 to 398.M36 In the year 487.M34 the Death World of Tallon Prime was contacted by the Omni Legion led by their first Chapter Master "Griffith" as one of the first worlds visited by the newly established Chapter. The planet is roughly 5540 km in its radii, putting it roughly 15% smaller than Holy Terra. The purpose of this was to find a world that would best suit training the Chapter’s Initiates and Tallon Prime was found.

Inconclusive reports that often conflict with one another have given different reasons for why the Chapter's original Fortress Monastery was ultimately abandoned. A notably suspicious detail is that despite the Chapter becoming fleet based later in its life the fleet that it would become known for seemed to be constructed and battle ready within a mere 3 years after the loss of their original Fortress Monastery.

One of the most popular theories is that it was overwhelmed by the Umbra and was deemed too dangerous. The Fortress Monastery would have been swarmed by thousands of these black creatures, killing anything that tried to stop them. During this event the very mountain the Fortress Monastery was built into would begin to shift and shudder as from the very floors and walls these Beasts tore though and begun to slaughter hundreds within their own walls. Though these are mostly rumors. No one knows the location of the original Fortress Monastery so it's been difficult to prove them true or not.

The Ark
"The Ark", is a massive ship capable of housing the entire Chapter, their allies and their fleet of additional ships should the moment arise. Referred to as a "Ramilies-class Starfort" The Adeptus Mechanicus of Roitheta hold a large presence on the ship as part of the agreement between The Omni Legion and Roitheta, all technology recovered by the Chapter is to be overlooked by Explorator Zubayr before it’s taken to Roitheta to ensure it’s condition and any additional research performed before it’s turned over.

Typically The Ark will hold its position between Roitheta and Tallon Prime, should it’s support me needed at either world. There have been reports of The Ark aiding in the support of Imperial fleets within the system but no exact accounts can be given.

Should the entire Chapter be dispatched to multiple campaigns they will leave the ship to their Companions with the Adeptus Mechanicus to watch over while protected by a small legion of Skitarii who’s weapons would reduce any intruders to vapor.

The Ark's Vault
Deep within the Ark is the Chapter’s personal storage of all relics, technology and other valuables. Appropriately named the Vault. Deep within the dark confines the faint glow of Skitarii eyes can be seen once you enter, awaiting to slay any intruders who make it passed the defense or those who wander too far from their guides. The Omni Wardens (Chaplains) are the protectors of this place, no one allowed to enter the vault without their permission. No one besides the Chapter Master.

Even if they reach the door they'd need to pass the pair of large Battle-Automata that stand at the entry. Wielding massive blades larger than an even the Chapter's largest Astarte with a powerful Mauler pattern Bolt Cannon attached to their left shoulder. A shield attached to their left forearm capable of extended in size to properly protect the machine and any allies standing behind it. Instructed to guard the entrance to the Vault and kill any who are deemed a threat to the once Reclusiam and anyone inside.

Most Marines of the Chapter enter the Vault with a Mechanist escort once they achieve the rank of Sergeant, granted a helm from the very Vault itself.

Most relics of the Chapter are kept here while the Captains of the Chapter guard relics unique to their Formations. It’s believed that many of these relics are taken from Renegade Chapters.

The remains of their Dreadnoughts are kept here should they be damaged beyond repair.

Beliefs
The Omni Legion will come to the aid of those of the Imperium if they're in their desperate hour. Believing the people who swear their loyalty of the Emperor of mankind are worth protecting, the Marines of The Omni Legion would stand between a group of civilians and an Ork firing squad. Despite this the Chapter’s duty does mean that should something as grand as an STC be involved then they must protect it at all costs, even if it means leaving the innocent or even fellow battle brothers behind to perish in battle. The Chapter would never risk the lives of a planet’s populace without attempting another method, such as attracting the attention of all the enemies or working to evacuate cities before a battle can break out.

Like many Astartes they don’t view The Emperor as a God nor worship of him as such, it is frowned upon among the Astartes. Though they don’t interfere with such worship or force their own beliefs upon other Astartes or citizens of the Imperium of man due to the risk of a religious civil war. The Omni Legion believes the Omnissiah is in actuality the Emperor of Mankind, thanking the Emperor for things ranging from the bolters in his hands to the very ships they stand in. As a result the Chapter's most veteran Mechanists, known as Omni Wardens, hold the position which would typically be held by Chaplains while maintaining their role as the Chapter's Techs. The light of the Astronomican is no doubt a sign of the Emperor's psychic might, thus Omni Legionaries believe that the machine spirit of each and every form of technology is purely an extension of his will.

With the rise of the new Primaris Marines it would cause the divisions between many Chapters who saw this new breed of soldiers as heretical. However this is completely different in the case of the Omni Legion who views the Primaris Marines as a gift from the Emperor. The very concept of Astartes created to be more powerful than what was before filled the Chapter with confidence, ready to fight alongside such warriors. Initially the relations between the Chapter and their new brothers was rough with many outright ignoring their Primaris brothers outside of combat and saw them as nothing more but strangers. This strictly being a result of Roboute Guilliman's rushed and careless implementation of the Primaris Marines, nothing was actually held against them, strictly becoming the front of the Chapter's spite for Guilliman's poor thinking.

An Occulobe mutation is the leading reason why Astartes in this Chapter always wear helmets when leaving the confines of their ships but over the millennia it has become a tradition. Many believe the intent of covering their faces is because they believe their roles are to defend the Imperium and aid in it's preservation, because of that they're faceless tools made by the Omnissiah and nothing more. This tradition has moved to the Primaris Marines as well.

The recovery of technology thought lost is a duty that can only be entrusted to ones with a deep respect for history and the discovery of knowledge, despite such a responsibility these Astartes are not permitted to strive nor pursue goals and ambitions that goes against their primary objective. Safeguarding the Imperium. Therefore it is forbidden to deny or question orders should it go against the Imperium and Humanity at large, punishable by life as a Servitor. Any who should break this vow would be removed from the Chapter's records.

Recruitment
Recruitment for the Omni Legion comes primarily from the world of Tallon Prime. The populace of the world has made advancements in the recent years because of the Chapter and the discoveries they have made. Large ancient cities created to house the majority of the civilians while the military makes use of the harsh environment to further train their soldiers. Other methods of recruitment may be from offerings provided by the people from worlds they visit, these people under the belief that their child could lead a better life as one of the Astartes who saved their world.

Every 100 years the Chapter will send the 5th Formation to collect new potential Astartes. Families with more than one son will be required to give up all but they'e oldest as long as they are between the ages four and five. Before these children are actually sent they will be subjected to quick examinations to determine their health, another to see how pure their genes are. Should any of the children display one condition that could be a result of inbreeding then the child will instead be sent to the Schola Progenium to pursue other lives. Their family will be then investigated, once the parents are determined they will be sentenced to death. Any remaining blood related members of the family will be stripped of their status and sent to the slums. All records of the family expunged from Imperial records.

The primary method the Chapter uses to determine if the potential recruits are worth their salt is running them through countless tests and physical examinations for the next 5 years. Within orbital facilities created by the Adeptus Mechanicus of Roitheta, members of the Psian Venatores will be charged with leading these lessons. Some children will be worked or beaten to death by the intense training they through. Succumbing to starvation or sleep deprivation in the halls, their peers punished for attempting to aid them should this happen. The children will be taught that only the best can become the defenders of humanity and they must be pushed to their limits to do so, only help those who can help in return. An ironic lesson to teach before their time in the Initiates where they are taught to value the lives of humans and how important their role is to safeguard their species.

Should all slots in the training facilities be filled the remaining children will be taken to a randomly selected Death World under the watch of selected battle brothers with few supplies, these brothers chosen from the 2nd Formation who remains within the sub-sector. The Astartes monitoring them would be instructed to treat the children as enemies during this time but not to seek them out, if they were to encounter them they were to kill them. Once the children reach the age of nine they'll be taken back to The Ark to begin their Gene-Seed implantation.

Battle Brothers
The ceremony in which the Initiate graduates to the rank of Battle Brother details them standing before one of the Formation's Mechanists who'll present them with their suit of power armour and their Companion. Soon after he will be assigned a role as a Devastator or Assault squad member.

Once finished with their service to either the 3rd or 4th Formations the Astarte will return to The Ark. Days later they'll be assigned to either the 2nd, 3rd or 4th Formation as a Tactical Marine.

Sergeants
The Marine enters the Ark's Vault with a member of the Mechanists. The Mechanist guides them through the maze of thousands of containers, cages and displays. All to find a section of the Vault which is divided off from the rest and has the purpose of holding ancient weapons and armour given to those who surpass the rank of Battle Brother.

Once they arrive the Mechanist will lock them inside. As that’s done, the room will darken and the only sources of light will be on the helms of past Astartes that are proudly put onto display. The Marine removes his current helmet and goes to pick one from the lines of helms from the ages gone by.

Captains
Upon the death of the Formation’s Captain a meeting of the other Captains is held to determine which Honour Guard from the Formation should be made his successor. Once one has been decided upon he is called to stand before the entire Formation. The remaining Honour Guards address the Formation as they announce the news of their new Captain and he is blessed by the Formation's Omni Warden.

After the Ceremony is finished the entire Formation is given the day to rest as the newly appointed Captain goes to meet with every member of his Formation.

Funerals
When an Astartes personal Companion dies in battle or of old age they will have their skull removed and their name will be engraved on the forehead. Then the skull will be converted into one of the Chapter's thousands of Servo Skulls.

When an Astartes perishes in battle his body will be cremated and placed into a coffin after the Progenoids has been extracted by an Chirurgeon. After a campaign all Legionnaires who perished will have their funeral held in mass by the Formation on board their Battle Barge, being headed by one of the Formation’s Omni Warden. If the Astarte had an Companion alive at the time of his death the Companion will be given the chance to give his eulogy, if the Companion also perished or the Marine did not have an Companion assigned to him by the time of his death the eulogy will be handled by the Machinist.

The funeral service goes as such: ''       *One, be given a painless death and their skull will be added to the coffin’s contents. ''
 * 1) Before the service can begin every Astarte in the Formation must bend to one knee and speak the phrase “Never forgotten and never lost, only remembered and reclaimed!” This is repeated ten times. Then the entire Formation stands up and places their right hand over their chest.
 * 2) The Machinist of the Formation leads a line of Coffins holding the Ashes of the deceased Astartes to the front of the Hall of the Omnissiah, followed by any Companion who is to attend the funeral. The coffins pushed by Servitors are brought to the front where the Machinist gives a speech to the entire Formation. 
 * 3) Each Companion gives his word on the deceased.
 * 4) The Astartes of the Formation return to their duties. The Companions that lost their superiors meet with the Machinist who summons a Chirurgeon and a Tech Priest. The Companions are given two options. 

       *Two, be succumbed to Mind Cleansing and be reassigned to a new Space Marine.

     5. After the choice is made the coffins are sealed and eventually added to a Mausoleum aboard The Ark.

Chapter Organistion
The Chapter’s Serfs called "Companions" are treated well compared to the Serfs of Chapters like the Imperial Fists or Iron Hands. They aren't abused, looked down to or ignored. The role of an Companion is to provide the Space Marines or their ships with whatever they need when they need it.

Unlike most Chapters who comprise their Companies with squads of 10 the Omni Legion puts extensive focus on leadership so squads are comprised of 5 with 1 being a sergeant, due to the massive populace of some Formations and half the number of Captains it's seen as vital to keep up the number of commanders.

During their travels they'll often catch communications from fellow Astartes or other Imperial forces that require aid. The chapter may come to assist their allies should the call be there. The sheer size of The Ark makes it possible to house several thousand more hands should a planet wide evacuation need their help, keeping the civilians locked away from Astartes or Companions should Genestealers or similar Xenos be blending with the populace. The closest Imperial world will then be the next location to drop off the masses before the Chapter moves on.

Unlike most Marine Chapters The Omni Legion possesses 5 Companies. This Chapter is divergent from the Codex Astartes. Having different Formations fill different purposes for different scenarios. Ranging from a Formation meant for low-scale excavations and training of recruits or forces meant to clear out hostile native life, support allies or to lay waste to the Imperium’s foes by leaving their world a flaming ruin. Claiming to follow the part of the Codex Astartes ordering that Space Marine Chapters are not meant to surpass 1000 Astartes but the Inquisition suspects this may be false. No evidence during inspections by the Inquisition with additional information provided by the Adeptus Mechanicus has shown this to be the case. The Chapter’s ability to replenish their numbers quickly is what drives these suspensions.

The 1st and 2nd Formations have been known to track down Renegade Chapters and execute them with extreme prejudice. Should the technology of these Renegades remain untouched by the taint of a chaos it is taken by the Omni Legion. Most of it finds its way back to the Forge World of Roitheta but sometimes their work is rewarded with permission to keep many weapons and armour they reclaim for the Imperium.

Ranks of the Chapter
The ranks of the Adeptus Astartes are different to typical Chapters in their names:

Initiates (Neophyte)
Space marines in training, making up the bulk of the 5th Formation. After several years of training they’ll complete their training, only then will they deemed worthy warriors and explorers for the Imperium. After a service of 8 years and the implantation of their Black Carapace the Astarte will graduate from the Initiate squads and become a member of the Devastator or Assault squads.

Should the Captain of the Formation deem their performance to be underwhelming or that they don't cooperate with their squad mates well enough the Captain will create squads of five and leave them on designated Death Worlds. The intent is to ensure the Initiates learn the important of squad cohesion and lacking such skills are unacceptable. Should all five Initiates survive the next 5 year on the Death World they will then be deemed ready to graduate. Should any die then the number of Initiates who passed will be years added to the survivor's service in the 5th Formation. For example, should three members of the squad die then the two survivors will spent 3 years back in the 5th Formation.

Battle Brother
A Marine who passed his trials will join the rest of the Chapter. Equipped with the typical gear of an Astartes. The backbone of the Chapter these Marines range from Tactical Squads to the mighty Centurions. With the extensive training

Sergeant
Squad leaders of these Astartes are granted this title because of their iron resolve and unbreakable bond with their battle brothers. Wielding a master crafted weapon from the vault and donning the helm of a past brother from battles long since passed. Guiding his brothers through the forests, deserts, tundras and hell landscapes to find relics and technology left from ages long since passed. Destroying the enemies of mankind as they go.

Lieutenant
Only in the recent 999.M41 has this rank been reintroduced with the rise of the Primaris Marines. Two of these Astartes operate directly under the Captain of each Formation, working to relay their orders to the Legionnaires. All Lieutenants are Primaris Marines as the Omni Legion Chapter believes that these new Marines will need to become integrated into their ranks should they be able to carry out the Imperium’s will at their fullest.

Captain
Space Marines who reach this rank are put in command of a Formation and are expected to get results as they are accompanied by the Formation's other leaders. Given the freedom to approach battle however they see fit the combat doctrines of the Captain's influence their own Formations and helps the Chapter evolve in their methods of battle. Every Captain is entrusted with a relic from The Ark, any others they claim must be returned to The Ark.

Chapter Master
The leader of the entire Chapter is given this rank, tasked with directing the fleets as commanded by the Adeptus Mechanicus. Rarely seeing the battlefield once the title has been taken the Chapter Master will personally lead the Chapter if a system wide threat has been determined. Unwilling to stand by and do nothing while his brothers go to battle he will battle the enemies of the Imperium while wielding countless Chapter relics.

Specialist Ranks
These are Astartes who have served the Emperor’s will for many decades to centuries or have been created to serve a specific purpose. Seen as the pride of the Chapter and always guiding their Astartes brothers through the battlefield or forging them and their doctrines through intense training. Ranging from simple Astartes who have seen countless battles on thousands of worlds to Astartes who are powerful Psykers and can turn the tide of a battle with a simple thought.

Chroniclers (1st rank Librarian)
Keeping to The Ark's inner sanctums where their role is to record the Chapter’s exploits. They spend days locked away writing miles of paperwork and working on creating the lists of bounty the Astarte’s return with on their travels. Trained by the Arcanists of the Chapter while every session and lesson arranged by the Lord Arcanist.

Arcanists (2nd rank Librarian)
Trained to use the powers of the Warp these mentally trained soldiers can bend reality as though it were their plaything, lightning bolts from their fingers to bursts of flames from their eyes. Wielding Force Staves designed to help them channel their powers in powerful melee strikes they can lay ruin to foes should they enter the battlefield.

Appearing alongside their non-Psyker brothers on the battlefield as part of the Formation leadership they are able to guide them through any fog of war. Most Psykers within the Chapter's Librarium are trained to be their abilities to alter one's state of mind, this trick is useful when making bargains with Xenos and Rogue Traders.

Lord Arcanist (Head Librarian)
Commanding everyone within the Librarium and pushing for further research of the Warp and their ways to harness its power. It is the duty of this single warrior to be an example of how one should be able to wield their psychic might. The research performed through their leadership has stockpiled for many millennia.

Mechanists (Techmarine)
Commanding many of the Servitors belonging to the Chapter they bless and maintain the weapons and vehicles of the Formations they stand with before a battle. Spending decades learning from the Tech Priests of Mars they come back to the Chapter as beings who speak to and for the Machine Spirit.

Chosen from the ranks of Tactical squads it's estimated that roughly 20% of them become Mechanists, thus making the number of Techmarines in the Chapter higher than most others. Only Astartes who have a strong affinity for technology and the machine spirit.

Omni Wardens
Chosen from the Chapter's most hardened Mechanists, just like the Iron Fathers of the Iron Hands they are a combination of a TechMarine with the skull themed helmet seen worn by Chaplains. The importance placed on the Mechanists cannot be stressed enough with their close relations to the Adeptus Mechanicus. Leading a squad of Mechanists into battle alongside the rest of the Formation's command they stand knee-deep in blood while rallying his brothers to battle.

Lord Mechanist  (Master of the Forge)
Working alongside Explorator Zubayr in the depths of The Ark he works to maintain and guard the technological discoveries made by the Chapter while providing his insight into the Machine Spirit of every vehicle owned by the Chapter. The frequency in which he leaves The Ark has been drastically cut once the Chapter took to their status as a Fleet based Chapter. He spends his days tending to the fleet with the aid of his own personal chosen Mechanists.

Chirurgeons
The medics of the Chapter who go into battle with their fellow Astartes to provide medical aid or extract their Gene-seed should they fall in battle. Their primary purpose is to aid in the creation of an Astartes through their gene therapy and their Gene-Seed and organ implantation. Most assigned to the Chapter’s Apothecarion. Unlike most Apothecaries in Space Marine Chapters these Astartes make use of tools commonly found in the possession of their Mechanists, specifically their Servo-arms. The additional limbs make them more efficient field medics who are capable of tending to more than one patient at a time, even wielding chainswords with these servo-arms.

Lord Chirurgeon
As master of the Apothecarion he organizes the placement and work of every Chirurgeon in the Chapter. Never leaving the confines of The Ark his role is to protect the Chapter’s Gene-seed and lead tests for future recruits for the Chapter with the assistance of the Magos Biologis.

Formation Ancient
The flag bearers of each Formation walk into battle alongside the Captain and his HQ, holding high a flag that displays the very Formation’s emblem and fighting alongside his brothers. Running into battle he rallies his brothers alongside him to strike down the foes of mankind. The words of the Omni Warden and the sight of the Ancient are enough to drive any Astartes to look death in the face and laugh as they cry out their loyalties to the Emperor and his Imperium.

Veteran Marines
Powerful soldiers from both the 1st and 2nd Formations. They have received centuries of battle experience through countless battles from the other Formations before they join these ranks. Trained to use all forms of combat to tackle all situations they’re the only ones granted use of the Chapter’s Terminator armour. Broken into teams of “Sternguards” or “Vanguards” depending on the mission and roles necessary to achieve victory.

Primaris Veterans
Much like the Veterans of standard Astartes these Marines must go through the initiations of the 5th Formations then spend decades as members of either the 2nd, 3rd or 4th Formations. Upon completing their training they will join the Veterans of the 1st Formation with the skills required to carry this title. Primaris Veterans are given access to the valuable Mk.X Gravis armour and more advanced weaponry, such as those utilized by Primaris Hellblaster Squads

Honour Guards
Like most Chapters Twenty four exist within the Chapter. Though unlike most Chapters, Four guard and fight alongside the Captain of each Formation and the final Four stand alongside the Chapter Master. Promoted from the ranks of the 1st Formation through its Veteran Squads. This was decided by the Chapter because the smaller command force of each Formation compared to their numbers made the life of the Captain vital.

Most Honour Guards within the Chapter are free to customize their amour as they see fit should they be given permission by their Captain, such as those within the 4th Formation. Tristan's Honour Guards utilize Indomitus Pattern Terminator Armour with additional firearms such as forearm mounted and shoulder mounted stormbolters.

Grand Guards
In the case of the Chapter Master's Honour Guards, one of these men are chosen from the 1st, 3rd, 4th and 5th Formations. Those who stand alongside the Chapter Master are given use of Tartaros Terminator armour as a reward for their service to the Omnissiah and Imperium at large.

Those chosen to achieve this rank will serve it till the day they die, accepting this as their final goal. Unable to become Chapter Master or a Captain.

The Omnissiah's Chosen
This one Astarte holds as much power as the Chapter Master while on the battlefield, wielding powerful relics from The Ark's vault and donned in an ancient suit of power armour that is unlike anything else in the Chapter. Colored red to put his faith and loyalty to the Omnissiah on full display to everyone before him. Granted free reign to take Veterans of the Chapter to accompany him on missions alike those of the Mechanicus' Explorator fleets or missions undertaken by the Deathwatch.

Like the Captains and Chapter Masters of the Chapter the Omnissiah's Chosen is given a place deep within the Chapter's mausoleum. However none save for the Chapter's Chapter Master, Chosen, and Lord Chirurgeon are permitted to enter these areas.

Master of the Fleet
Selected by the Chapter's Council this Astarte is given command of the Ark and it's support vessels, always alerted to the locations of every Formation's fleet. The proximity the Starfort maintains to the Forge World of Roitheta ensures reinforcements may be called upon at any time and could arrive within days should the aid of the Starfort be required. Taking commands from the Chapter Master and Fabricator-General only.

Companions
''The Serfs of The Omni Legion are known as 'Companions', their duty is just like that of any other Chapter Serfs. Like the Ultramarines and Salamanders they treat their Serfs well for their duty to their Astartes masters. ''

''Each Legionnaire once they achieve the rank of Battle Brother is assigned an Companion whose duty is to provide the Marine with a partner that cleans his quarters and armour. Bringing his meals should he be preoccupied with his own duties. Though Companions may be seen as personal slaves to some it’s far from the truth as their Space Marine seniors value them as they would any other Battle Brother. The value of the Chapter's Companions sees that they never see the battlefield ''

Head Chef (Master of the Refectorium):
In charge of preparing meals for all Space Marines and other Companions on The Ark, the Head Chef has the duty of organizing all the cooks and ensuring meals get made on time all the time. Something to note is that meals are determined days in advance to suit the activities of the Marines such as the portions or what form the food should come in.

Artificers
Companions whose duty is to aid the Mechanists and Adeptus Mechanicus have this title. It's very uncommon to see Companions in this role as the heavy work is handled by Servitors in the effort to carry materials, tools and assist in the repairs. However due to the necessary "human" mind needed to catalog and organize the Chapter's master crafted weapons and relics they play a major role in assisting the Mechanists in this task.

Nutrix (Medicae)
Personal aids to the Chapter’s Chirurgeons, only some of the best educated Companions can become Specialists because of the knowledge needed to even understand the biology of a Space Marine. Especially now with the newly enlisted Primaris Marines.

Aids (Scribellum)
Recorders of the Chapter’s duties and developers of the Chapter’s purity seals. Assisting the Chapter’s Chroniclers (1st rank Librarians) in fetching research materials or tools to record. Long days and nights of keeping candles lit and ensuring the Chroniclers have ink.

Mediator of the Companions (Ordinator of the House)
As the personal Companion to the Chapter Master it is their role to relay all commands from high ranked Astartes of the Chapter and ensure that every Companion from every role is given their instructions. Like many Companions they are not permitted to leave the Ark for their own safety and to ensure moral is never waned.

Order of Battle (as of 111.M42)
The leaders of the Chapter plan and discuss future campaigns for the Chapter from The Ark, a council between the leaders of all the Formations and the Lords of all the specialists. Located in the heart of the massive Fortress Monastery is the Chamber of the Lords. They sit at a large round table to discuss the future of the Chapter. Even the ancient Explorator Zubayr who discovered the Astartes holds a place in the Chapter's higher ranks alongside Magos Dominus Mira. Mira uses her Mechanicus servitors to guide Tristan's sarcophagus to this Chamber so he may take part in such meetings.

Each Brother may be assisted in missions by a Servitor, assigned to carry extra ammunition or attachments for weapons. An Initiate will not be permitted the use of one to teach them proper discipline as part of their training. Additional Battle Servitors accompany each Formation as both reinforcements and disposable infantry intended to cause as much damage to the enemy as possible before they fall. Under the command of the Formation Captain, Lieutenants and Mechanists.

Unlike most Space Marine Chapters that have 10 Companies, the Chapter has 5 Formations. By the year 398.M36 the Chapter became fleet based and each Formation is granted use of their own Battle Barge due to the larger size of their Companies. Each fleet consisting of a lead battle Barge and several Strike Cruisers which themselves are each aided by additional frigates.

Interesting to note is that the Terminator units within the Chapter are actually a mixture of the Tartaros Pattern and the more standard Indomitus Pattern, though the former are reserved for the 1st Formation and the Chapter's Honour Guards. Due to their superior defenses the Chapter's Captains are the only ones granted extended use of the Cataphractii pattern. Though Cataphractii have been utilized for missions aboard Space Hulks or when boarding enemy ships due to their superior defenses making them far deadlier in confined spaces.

Combat Doctrines
The Omni Legion is built upon warfare of every kind ranging from infiltrating enemy lines in order to take them out from within to leaving nothing left through overwhelming firepower. Plasma, Melta and Lasguns are the most popular weapons for the Chapter because of the Forge World of Roitheta specializing in such weapons.

Space Marines of the Omni Legion enjoy the sounds of music that can be heard throughout their ships, systems set up throughout the walls to play melodies meant to help Marines and Companions focus on their tasks at hand or even to help them relax. Music also plays a large role in battle as the Chapter utilizes dozens of Vox-Drones that project these sounds over large distances as a means to raise moral for allies and intimidate their foes. It works to attract the attention of the enemy, making for a great distraction so squads moving to flank can approach with ease.

Typical strategies of the Chapter involve collecting as much tactical information on the opponents location, numbers and the environment. Many Tactical teams are sent ahead to set up ambushes with heavy weaponry or cause environmental hazards. Despite this the Formations themselves follow additional tactics unique to themselves. Their Tactics will be detailed ahead.

It has become normal for these Legionnaires to prefer blades produced by the Forge World of Roitheta which are more akin to power swords than chainswords, not nearly as effective as power blades they are much easier to produce.

Formation 1
This Formation is one of the most battle hardened of them all, like most Chapters. The Arcanists rains fire and lightning from the sky to smite any being that dares challenge the Chapter’s might as the Omni Warden marches the battlefield encouraging his brothers to rally by the Ancient whom holds their Formation’s flag high. The mighty warriors march across the war torn worlds to purge any enemy of mankind that dares cross their paths. The integration of the Primaris Marines meant the Chapter pushed for the Veteran Company to have their HQ comprised with as many Primaris marines as possible once they'd be deemed capable of handling such a responsibility.

The Veterans within the Formation have been trained to operate various patterns of Terminator armour. The inclusion of Primaris Veterans has seen that they themselves make use of the powerful Mk.X Gravis armour in a similar fashion as Terminators. Both forms of Veterans capable of tackling multiple forms of combat using different means either through tactics or equipment.

Spending the millennia scouring the galaxy for relics or lost technology they demonstrate the Chapter’s true purpose with the might of the Omnissiah's chosen. Space Hulks and abandoned Star-Forts are the primary targets of the Formation during their ventures, though keeping their channels clear for communications from fellow Astartes or other forces of the Imperium.

Formation 2
With the mission to guard the Roi sub-sector these Astates have been known to operate as far as the Nephilim and Charadon Sectors. Despite the contempt many brothers may feel toward other Formations for the freedom they are provided they are determined to fulfill their role as guardians entrusted with the protection of their Sub-sector. Even if it is within the confines of such a small section of space.

Unlike most of the Chapter that will be willing to negotiate a temporary alliance or ceasefire with Xenos should it prove to to be purely in their benefit the members of 2nd Formation do not. The nature of this Formation is to ensure no threat remains. Peace is never an option and they’ll slay all the enemies of mankind. Despite current relations between the Imperium and the Ynnari they refuse to work with them but they will not fire upon them for that is the will of Roboute Guilliman and presumably the Omnissiah.

Some view them as a designated cleanup crew of the Chapter through the extensive use of flamers. If the world still holds value as an Imperial world or further investigation is needed then the corpses and wounded of their foes are set ablaze, especially against the Orks whose form of reproducing is spreading their spores. Boarding teams make extensive use of Reivers who are fast to board and take over an enemy battleship before they realize they're under attack, these same Primaris units will make planet fall weeks in advance of the Formation to terrorize the enemy and weaken their forces and resolve before the rest of the Formation arrive.

Formation 3
Primarily deployed to support another Formation before they deploy for a mission or provide aid to a local planet who may be under siege but is already being supported by the Imperial Guard or another Space Marine Chapter. Not as heavily armed as the 4th Formation these Astartes are still invaluable to the aid of Imperial forces.

Tactical teams create defense lines and hold their positions with their lives. Though to create even greater havoc on the battlefield the Formation makes use of Assault squads and Bike Assault teams that will patrol their defenses with the intentions of hit and run attacks, the stationed allies will use the breath of fresh air to fire upon their enemies alongside Devastators.

The Formation will assign borrowed Initiate squads to assist in the evacuation of civilians as a means to ensure their safety in case the defense line is broken, working to get everyone off world as quickly as possible before joining the bulk of the fight. Assigned Brothers will travel with Imperial Guards to perform their sweeps, the enhanced soldiers work as a way to detect the enemy faster and to draw enemy fire to ease their allies.

Formation 4
The majority of missions taken by this Formation is to be a support force accompanying another Formation or other Imperium Forces whose duty is to tear down enemy defenses no matter the walls. Intercessor squads inside Repulsors as Devastator squads await deployment in Land Raiders. Assault teams charge across the battlefield to report ahead of the bulk of the force. Razorbacks have been modified to play purely an offensive role in order to assist the overwhelming firepower of the Predators. Dreadnoughts shake the very Earth as they charge alongside the lines of armour.

Intercessors accompany Devastators as they both play the vital role causing as much collateral damage to enemy infantry from their distance while armored support take out other vehicles. Sometimes these infantry units will join infiltration missions with Tactical squads.

The sheer number of armored support the Formation possesses makes the additional Mechanists and their Servitor assistants mandatory. Many Servitors join the front lines with the Tactical Squads to carry equipment or perform mid-mission maintenance. The Mechanicus provides many Servitors to the Chapter so it's common for those in this Formation to be used as fodder during full frontal assaults. Drop Pods are a typical form of deployment for those within this Formation, intended to overwhelm enemies with armour and bolter.

All members of the HQ squad for this Formation are equipped with Terminator pattern armour to ensure their safety.

Formation 5
This Formation is primarily used to train their Initiates. Unique suits of power armour are provided to the Initiates that don't need to make use of the yet-to-be implanted Black Carapace. Despite not being full fledged Astartes other Formations may request the aid of Initiate squads for an extended period of time.Typically assigned roles of snipers or close ranged support for the Astra Militarum.

The training these Initiates go through takes years of working together with their commanders scouring planets pointed to them by the Adeptus Mechanicus. Dig sites being worked on throughout the planet after the local populace has either been negotiated with or dealt with.

One of the most common strategies that's utilized is the concept of "Ghosting" which details that if the Formation deems an enemy force too vast to attack they will divide into multiple squads spanning several miles. All coordinated by the Captain as he organizes assassinations on enemy commanders and missions to infiltrate enemy bases and sabotage their vehicles or even steal many of their weapons and supplies. These Ghosting strategies can last many months, even stretching years until aid from the rest of the Chapter or other Imperium forces arrive.

Ships of the Chapter
After the Chapter became fleet based they were provided with additional ships to aid their fleets in their long missions that take them all across the Segmentum Ultima.

Principality
Lead ship of the 1st Formation. Equipped with powerful weapon batteries all along the haul and additional Bombardment Cannon. Unique to this Battle Barge are massive harpoons sometimes used to anchor the ship to Space Hulks and try to redirect it's course with the aid of additional Strike Cruisers that will anchor with their own but theirs use powerful magnets rather than hull piercing spikes. The most common purpose is to pull enemy ships along with the intent to use them as battering weapons or to capture them.

Dominion
Lead ship of the 2nd Formation. Similar to most Battle Barges it has a large collection of weapon batteries. Although with additional plasma cannons along the bottom for close engagements. The front of the ship possess a large reinforced blade for ramming purposes, during these close engagements the Formation may send Terminator units on board to disable the ship and kill the crew while they struggle to recover. Another popular tactic is when getting close the ship will drop powerful Melta bombs intended to enter the enemy ship via the massive gaps in their hull from the earlier plasma cannons.

Virtue
Lead ship of the 3rd Formation. Built to be a fast ship that provides accurate fire support. Rather than being defended by the fleet's Strike Cruisers 'Virtue' fights alongside these ships. Typically keeping its distance as it will circle the enemy and fire at them from afar, only moving closer to deploy fighters, giving them a higher chance of engaging the enemy ship before being fired upon without Battle Barge fire support. As expected the ship is built to be faster for its uses in evacuations for stations and cities.

Guardian
Lead ship of the 4th Formation. A warship unlike any other in the Chapter, a Battle Barge reconstructed many times as it has been damaged heavily through countless campaigns. A thick armour plating that has changed its overall appearance, many wouldn't even tell it's a Battle Barge outside of its size. Built to engage enemies on any front, unlike many Battle Barges within the Chapter this one carries less Astartes, part of that role falling to the Strike Cruisers. Powerful cannons that blow apart enemy ships and a thick hull that can take direct plasma shots should the void shields fall.

Guidance
Lead ship of the 5th Formation. The most standard of all the command ships belonging to the Omni Legion, very little is changed about this ship over the time. Used to transport the hundreds of Initiates of the Chapter across the Sector, many Strike Cruisers breaking off into smaller fleets to operate in systems these Initiates are left to train upon. Creating a large network of ships ready to merge back into a coherent fleet and engage an enemy force within days.

Harut
Once the Chapter became Fleet based this Ark Mechanicus for a time was their flagship that would be seen in battle, commanded by the Chapter Master. In recent millennia the ship is seen less and less. Typically remaining close proximity to The Ark. Always ready to be taken under the Mechanicus to aid the Omni Legion and lead to war with the rest of the fleet. The true master of this ship is named "Venerari".

Marut
Originally bound to the Forge World of Roitheta this ship was under the ownership of Explorator Zubayr during his quest for knowledge. This is the final ship of note and the twin of Harut, a fellow Ark Mechanicus. This ship is used by the Omnissiah's Chosen, exploring the galaxy with his own personal forces aided by the Mechanicus. Operating alone without any support ships the intention is not to go to war but rather to enter and leave a system undetected, despite this the vessel like any within the Mechanicus has the advanced weaponry to wipe out most enemy crafts with ease.

Gene-Seed
''The physical appearance of the Astartes is relatively average with a lighter skin tone and dark but cloudy eyes. The average height is much larger than most Astartes, putting them closer to the new Primaris Marines.''

Genetic Idiosyncrasies/Mutations
After being rediscovered by the Imperium there have only been 3 mutations to their gene-seed found after thorough tests and examinations.
 * 1) The Betcher’s Gland, similar to the Imperial Fists and Raven Guard Chapters. The Omni Legionaries don't have access to this organ’s abilities to spit acid or digest food easier than the average Astartes.
 * 2) The Occulobe:  Astartes of this Chapter are very sensitive to ultraviolet rays, when leaving their ships they are to keep their helmets on at all times to ensure they don’t get irritated. It won’t cause any permanent damage but it’ll make it difficult for the Marine to see anything unless they have something to help block those rays. Their eyes have a dark but cloudy appearance.
 * 3) The Ossmodula: Astartes with this mutations average a height of 8 feet, the larger and thicker bone structure makes the Astartes much more resistant to damage very similar to the Black Dragons. This has also made it harder to create Astartes whose bones may tear through their muscles and skin causing them ceaseless pain and agony until they're put down. This mutation has a 20% chance of causing the Astarte's development to fail. Custom designed power armour is developed for these Astartes due to their size, based off the designs used by the original 200.

Additionally Astartes of this Chapter seem “calmer” than some other Space Marines, not as though they’d always seek a peaceful resolution rather than fight but they’re capable of maintaining their composure even in the presence of the enemies of mankind. This is mostly present against the Eldar and Tau. Further details listed later.

Records are kept close to the Adeptus Mechanicus and the High Lords of Terra as all further research and tests are carried out even in the modern age.

DeathWatch Service
Veterans of the 1st Formation may be picked to join the DeathWatch, serving their vigils with Watch Fortresses "Prescience" or the "Eye of Damocles". Most commonly the members of the Chapter that join the Deathwatch are Astartes trusted with the use of Plasma or Las-weaponry due to their experience with such. Rarely do members of the Chapter make use of the DeathWatch Terminator armour unless absolutely necessary, this is due to their belief that if they rely on the Terminator armour then they aren't worthy to use it. Veterans of the 1st Formation once they finish their service to the DeathWatch are transferred to the 2nd Formation. Reasons for why can only be suspected that the Chapter doesn’t want to risk mixing brothers who are expected to keep a calm demeanor around xenos for the safety of valuable technology with Astartes who have been expected to and ordered to slay every type of xeno they encounter.

Dark Angels
There are very few records of the Omni Legion encountering the Dark Angels until recent centuries. Typically when this occurred, it would be at the scene of a Space Hulk. The earliest entry is both Chapters arriving at a Space Hulk in the year 896.M34. The Angels themselves didn’t seem to take issue with the Chapter being present at the Hulk. After finishing their work the Dark Angels left the Omni Legionaries to harvest the Space Hulk for relics and ancient technology for the next few months. What the work was is unknown to the Omni Legion as this information was kept to the Dark Angels themselves.

The Dark Angels, their successors and the Omni Legion all appear very secretive, but for very different reasons - for the Omni Legionaries it's what they recover on expeditions and the Mechanicus finds useless for their research. At least that’s what is seen by the rest of the Imperium. Both factions have worked more frequently with one another as millennia passed, each providing intel about various matters.

Because the Omni Legion isn't technically an official successor to the Dark Angels nor do any high ranked members of the Unforgiven exist in the Chapter they have no knowledge of the Inner Circle or the Fallen.

Ultramarines
They're not fond of the Ultramarines’ strict and aggressive nature toward anyone who doesn’t strictly adhere to the strictures of the Codex Astartes. The Ultramarines often tends to pry into the Omni Legion’s work often, especially when they are near the borders of Ultramar during their campaigns. Despite this the sheer number of successor Chapters they have and the proximity to Ultramar would be a fool's decision not to ally themselves with the thirteenth First Founding Chapter.

After the return of Roboute Guilliman and the rise of the Primaris Space Marines, the opinion of the Ultramarines became rocky because of the forceful introduction of the Primaris Marines, though the aid they provided has helped the Chapter. Despite this the Omni Legion doesn't care for Roboute Guilliman himself.

Salamanders
Relations between the Salamanders and the Omni Legion has always been great because of their similar outlook on their Serfs and the Imperium’s citizens. The Chapter sometime lends aid to the Salamanders if they believe they’re close to finding one of the Artefacts of Vulkan, though this has never truly yielded results. Working with the Salamanders has become one of the greatest honors among the Omni Legion.

The Second Formation of the Omni Legion, due to their more common use of Melta and Flamer weapons, work best with the Salamanders in actual combat. In battle, fighting side-by-side, the flames wash over the Astartes armour. Despite their more aggressive tactics the very idea of fighting along the sons of Vulkan keeps the 2nd Formation in line.

Ashen Knights
Similar to the Salamanders Chapter the Omni Legion has a deep respect for their fellow Astartes from the Ashen Knights who value all life. The Chapter may disagree with some of their choices of who they deem worth defending but it doesn't intrude on their missions. Since both Chapters hold such importance of the lives of civilians it isn't uncommon for the Omni Legion to send the 3rd or 4th Formations to aid the Ashe Knights in the defense and evacuation of civilians if threats such as the Tyranids or Orks are present.

The details of the Ashen Knight's organization is a secret held by the Omni Legion who don't think any such actions should be deemed heretical if used for the benefit of the Imperium of man. After all, what harm is there in having reserves...

Steel Harts
Despite the fanatical nature the Chapter holds for the Codex Astartes it doesn't stop the Omni Legion from operating with them. More specifically the 1st and 4th Formations due to their superior artillery to other Formations. The Omni Legion's history with the Ultramarines has made their relationship with the Steel Harts easy but their tactics and combat doctrines is what truly draws Omni Legionaries to cooperate with them. Despite this the Omni Legion has little tolerance for endangering Guard allies that they feel so compelled to protect.

The trust the Steel Harts show toward the Inquisition puts the Omni Legion on their toes, seeing as how the Chapter has been harassed by the Inquisition for Millennia.

Invictors of Mars
As a fellow Chapter who allies themselves closely with the Adeptus Mechanicus the Omni Legion shares the mission of preserving and salvaging mankind's technology. The older Chapter of the Invictors has undoubtedly inspired the actions of many Omni Legionaries, the care for the people of the Imperium has ensured a good relationship. Despite the overall outlook the Invictors maintain in this regard. Exchanging important Intel and aiding one another during campaigns frequently, often at the request of the Mechanicus of Mars itself.

Rarely would the Omni Legion dare to attack a Hell-Forge but combined with their forefathers and the Adeptus Mechanicus itself these forces could lay waste to any traitorous Hereteks and any Titan Legions would dare ally with them. The Legio Sol Devoratores tearing apart their titanic foes while the Astartes take to the planet itself and turn bolter or melta to any traitors who attempt to fight back, flee or even surrender. Corrupting the Omnissiah's very creations is a punishment made only in death.

Relations to other Imperial Forces
The Omni Legion may be Astartes who have taken a vow to defend the Imperium against every threat in the galaxy but they aren't everywhere and there are situations that even the Space Marines can't or won't be capable of handing.

Astra Militarum
The brave men and women of the Imperial Guard make up the bulk of the Imperium’s military might and the Omni Legion aren’t ignorant to this fact. Numerous times the Chapter has come to their aid. Despite the history of Space Marines basically stealing the glory of victory and leaving the Guard with nothing but their dead, members of the Omni Legion don’t fall under this and have nothing but respect for the forces of the Astra Militarum for facing such unbelievable odds.

The first time the Omni Legion notably encountered the Imperial Guard was after the discovery of Tallon Prime. In the year 497.M34 on the planet of “Patron” the Imperial Guard of the world attempted to hold off an Ork siege for months until drop pods fell from the sky and teams of Space Marines stormed the lines to aid the Guards. Within days the additional aid from Imperial Knights arrived and with their assistance the forces the Orks were wiped out.

The Omni Legion do what they can to make the Guard feel accomplished and will not stray from any details when speaking of the bravery of any Guardsmen.

The strongest bond between the Omni Legion and the Astra Militarum is through the Psian Venatores, the armed defenders of Tallon Prime. These skilled soldiers that fall under the Ordo Tempestus' umbrella make use of the planet's dark environment to train and operate as tactical hunters. Some members of the regiment taming the once thought uncontrollable wildlife of the planet. Commanded not from the cities of Tallon Prime but rather from the planet's moon 'Phaa ' which houses their operations and a small navel base.

Adeptus Mechanicus
Thanks to Roitheta aiding in the recovery and birth of the Omni Legion they believe themselves to be indebted to the Adeptus Mechanicus as a whole. When orders from the AdMech come in the Omni Legion are fast to act and race to complete their missions. Despite these orders from the Mechanicus the Chapter is still given freedom on HOW they accomplish these missions as long as they fulfill their purpose.

Many times the Chapter itself will find their own way to the technologies sought by the Mechanicum. The Mechanicus holds a presence on The Ark at all times and the Forge World of Roitheta supplies the Chapter with their weapons and more.

Explorator Zubayr and Magos Dominus Mira were both selected personally by Fabricator-General Aliya to monitor and report on the actions and behaviors of the Omni Legion over the millennia. Mira possibly becoming too invested in one Astarte.

Adepta Sororitas
The zealot behavior of the Sisters of Battle frequently turns the Omni Legion away from wanting to serve with them because of the Sisters willingness to kill anyone who they believe is a heretic.

Even after The Age of Apostasy the only Orders the Omni Legion will agree to working with are the Order of the Argent Shroud and those like them because of their more selfless attitude and outlook on the Imperium. Specifically the Order of the Sacred Flame which works close with the Chapter as their Order was founded and is based on the world Tallon Prime which had been claimed by the Astartes. The Order is known for accompanying several of the Chapter’s Formations as reinforcements that infiltrate behind enemy lines to take out commanders or a primary source of negotiation because of the more human appearance the women possess. Many men with power to do as they wish and either join or surrender to the Imperium. Additional information on this Order is disclosed later.

The influence the Omni Legion bled into the Order and they reshaped into an Order that worships the Omnissiah in name, treating every piece of Imperial technology as holy relics. This zealot attitude still doesn't line up with many within the Chapter though it is preferred to their old ways. The Order of the Sacred Flame call the Omni Legion's former homeworld their new one, entrusting them with the protection of the people.

The Inquisition
The organization that works as the Imperium's secret police they hold as much power as the very High Lords of Terra, even though they suppository answer to the Emperor himself this isn't enough to gain the Omni Legion's favor. Their treatment of the Imperium's people is only the tip of the iceberg to why these Astartes loathe the Inquisition. Many Legionaires of the Chapter needing to force themselves to remain silent should an Inquisitor be around, despite how they feel the power and influence a single Inquisitor possesses is to be feared.

Upon the Chapter's creation several Inquisitors left to the Forge World of Roitheta to see the new Space Marine Chapter, they possessed no records of this Chapter and any and all they could find were closely withheld by the High Lords of Terra. Chapter Master Griffith was confronted by two of these Inquisitors while the other 199 Astartes were still preparing to leave Roitheta in search of a recruitment world. He was questioned for hours and much of what he told them was information given to him by Fabricator-General Aliya in advance, claiming they were in fact created as part of the 7th Founding. Unconvinced of this they reported to Grandmaster "Theodore Holoserica" who agreed that this Chapter's origins were suspicious and would dedicate much of his efforts seeking to expose them.

As millennia passed as did the names of those who sought to bring the Omni Legion's past to light, the loyalty the Chapter displayed and even an Order of the Adeptus Sororitas allying with them made it increasingly difficult. Many successors would replace those Inquisitors who obsessed over the Chapter. Calling for as much information about the Chapter as possible. Gene-Seed records, Chapter strength and even detailed reports of all their campaigns covered by both the Astartes and the Adeptus Mechanicus or any other allied forces that may have been present. Despite all this they seem intent on proving something. After thousands of years maybe it's just tradition and it's too difficult to let it go.

Relations to Xenos races
Much like how the Omni Legion won’t hesitate to turn a bolter to agents of Chaos there are countless Xenos races who would suffer a similar fate...some more than others.

=== The Tau Empire === The Tau aren’t a faction they will engage in combat on sight. However if they don’t heed their warnings to stay back they’ll attempt to wipe the Tau out, if they retreat they won’t pursue. Despite the proximity the Omni Legion’s investigations and patrols place them to the Tau empire they have rarely encountered them. Such events only occurring in the last millennia.

If the Chapter can identify a soldier of the Tau Empire as a human they will wipe out all Tau resistance and forcefully take the human deserter to subject them to questioning, beyond that the Omni Legion don’t care what happens to the traitor. The DNA bound weapons of the Tau only have any value to The Chapter if they're from a human, another reason they are so eager to capture these humans.

The Eldar
The Omni Legion never seek conflicts with other Xenos races such as the Eldar because they believe that neither faction would benefit from it. The sight of an Eldar Craftworld will make the Astartes wary to them but only keeping an eye on them should they get too close to their fleets or the world they’re investigating.

The only Eldar faction they ally themselves directly with is the Ynnari, very similar to many within the Imperium this is due to the aid in the resurrection of the Ultramarines Primarch Roboute Guilliman. The 2nd Formation despite their anti-xenos outlook will work alongside these Eldar for this reason.

The Dark Eldar
The Omni Legion has rarely encountered the Drukhari as they attempted to raid nearby systems which managed to get out a distress signal before communications are lost. These few instances resulted in minimal loss to the Chapter but a major loss of Imperium citizens being captured and taken away by the Drukhari into the webway. Numerous attempts have been made to pursue the Xenos as they flee to Commorragh but it has always resulted in failure.

More common sightings of these Xenos in recent Millennia have been of the "Kabal of the broken sigil" as they have launched a massive offensive against the Necron "Sautekh Dynasty" in the Eastern Fringe. A conflicting scenario as both races have proven to be a danger to the Imperium of man. Investigation missions have been launched to survey the conflict in the last 100 years.

The Necrons
The mission of The Omni Legion means that the risk of encountering Necrons is much higher than most other Astartes. They have come to blows with these mechanical foes countless times. The first attempt to converse with these beings resulted with a conflict that lasted 50 days and 49 nights before the Astartes withdrew from the planet.

Necron technology is banned from being brought aboard any land or aerial transports let alone The Ark because the Chapter doesn’t want to risk the chances of Necrons being able to taint their Fortress Monastery.

The most prominent figure of the Necrons that gets the attention of the Chapter is the Necron Overlord Trazyn. Upon learning of a Necron Overlord who holds such a large collection of relics there have been countless attempts to capture or find him, Trazyn himself has attempted to do the same with members of the Chapter.

The Orks
Due to the location of the Forgeworld of Roitheta they encounter attacks from the Ork Empire of Charadon on many occasions. Typically ending with the Ork fleet being wiped clean from the stars. The green skinned Xenos frequently comes to blows with the world's Titan Legion.

Since the Chapter frequently moves between Roitheta and their next target for investigation the Orks have tried catching onto their patterns and attempted to catch them off guard. Most times it's after The Omni Legion leave Roitheta or when they deploy most of their forces to search. The Orks will attempt to use overwhelming numbers to fight the Chapter to no avail.

The Tyranids
Negotiations are not an option. Kill them on sight. If a planet is suspected to hold either of these species the Omni Legion will deploy the 1st, 2nd, 3rd and 4th Formations to destroy every Xeno they can find. This is however very rare as the duty of the Chapter isn't to hunt Xenos. If orders are however to deal with such a threat in the event another Space Marine Chapter, the Ordo Xenos or Imperial Guard are unable to reach the world before them then they’ll do what needs to be done.

Obviously this also includes all forms of Genestealer cults and the worlds they inhabit. It brings great grief to the Astartes should they need to wipe out an entire planet's populace but in order to protect mankind and preserve the galaxy it must be done.

Captain Lucan
One of the most fondly remembered Captains of the Omni Legion's history, Lucan was the Captain of the 1st Formation till the dawn of the 42nd Millennium. He wielded a relic of the Formation, a sword he named ' Helm Breaker.' Lucan was what many thought was a the perfect example of a what it meant to be a member of this Space Marine Chapter, he was wise and only took to the field if he believed he was needed. Despite this it was how it's believed that he'd ultimately die by the hands of Khârn the Betrayer during the Fall of Cadia. Leading an assault against the charging forces of Chaos he and most of his Honour Guards led the Chapter's Veterans to battle where they'd fight till the end. The fate of Lucan, his Honour Guards and Helm Breaker are unknown, some in the Chapter believe he's still alive, somehow surviving the destruction of Cadia while he was still standing on its surface.

During his service as one of the Formation's Honour Guards, Lucan led a squad of Veterans into the heart of a Space Hulk, intending to find the center of the ship where they believed the Genestealer threat was greatest. He and his squad would vanish for days with mere seconds of updates over the vox per day. The rest of the Formation cleared the massive ship of many items thought to hold value to the Imperium. Most would need to be purified by the Tech Priests to ensure they were clean of any taint from the warp. The Captain of the Formation would lead a mission to the center alongside his Honour Guards to find Lucan and his squad. Hours would pass before Captain [REDACTED] would locate the squad of Veterans, they had discovered a [REDACTED].

[Further events have been expunged from Imperial Records.]

Upon the death of 1st Formation Captain [REDACTED] Lucan would be selected to succeed him by the Chapter Council. His actions would see to it that the Chapter would see many victories, Lucan leading his own personal campaigns to hunt and slay any and all Chapters who threatened to become Renegades. One of the few Astartes in the Chapter who took satisfaction in hunting and destroying worlds that sheltered such traitors. He carried to malice or spite toward them, it was all for the safety and preservation of the Imperium.

Captain Lionel
The current Captain of the 1st Formation, a Primaris Marine who had been trained over the course of ten thousand years to fulfill such a role. He was assigned this position by order of Roboute Guilliman. Tradition dictates that one of the Formation's Honour Guards are to succeed the Captain at his passing so the idea that a seemingly unproven Astarte was tasked with leading a Formation was most concerning. This complete disrespect for the Chapter's ancient traditions would lead many within the Chapter to reconsider their trust in the resurrected Primarch, believing that such actions could damage the Chapter or any other Space Marine Chapters who suffered this fate.

His weapon of choice is a relic given to him by the Chapter Master after his arrival, it is in truth a relic taken from the renegade Chapter the 'Pale Fangs'. This weapon is a sword similar to Lucan's but this one was partnered with a shield as its sheath, the shield provides a steady charge for the blade while it's sheathed inside. It's name is ' Fenris' Fang '.

Lionel makes use of the newly implemented Mark X: Gravis armour, in the span of over a century it has already diverged from its original design. The standard colours of the Chapter make up his design but with an alteration to the theme, appearing similar to a knight of ancient Terra's history. The shield he wields is capable of mag-locking to his right forearm, leaving his hands free to grasp anything.

As the decades passed the Chapter's relations with the Primaris marines improved drastically through their service and thus Lionel's relation to the rest of the Chapter has grown from bitter to respected. Though many still miss the late Captain Lucan. Through the interactions with his battle brothers Lionel has done all he can to learn and adapt to his Chapter brothers, alongside his Primaris brothers. This has been met with a surprising amount of concern from the Chapter, some worried that Lionel may be trying to be like Lucan, an Astarte he'd never met. The concern being for Lionel's own sanity and performance in the field.

Captain Vilhelm
The most violent and aggressive of all the Captains he has zero tolerance for nearly any xenos race, the only reason he won't fire upon the Eldar in recent years is because of their involvement with resurrecting Roboute Guilliman. Many would assume from Vilhelm's personality that he'd risk going mad with rage and become something akin to the Khorne Berserkers, though the only thing that Vilhelm hates more than xenos is traitors to the Imperium.

Vilhelm will often take to the field of battle in his custom Cataphractii Terminator armour while accompanied by his Honour Guards, which he refers to as his 'Executioners' (No relation to the Executioners Chapter). His weapons of choice alternate between his battlefield. His most notable are his relic Claws bound to his Cataphractii suit, ' Hell ' and ' Heaven '. Both claws with built in bolters seen along the knuckles allowing for close ranged firefights.

His envy of the 1st Formation's Captains is because of his ambition of exploring the galaxy as a Veteran, perhaps as their Captain. Early in his career as a 1st Formation Veteran he'd be sent to the Deathwatch to serve for nearly 30 years. Upon his return he'd be sent to the 2nd Formation, to never see the far reaches of the galaxy. This jealousy has only multiplied since the introduction and implementation of Primaris Marines, especially toward Lionel who he hadn't believed truly earned the right to be a Captain.

Captain Logan
Easily described as the most charismatic Captain in the Chapter, he's also the youngest in the Chapter's history to reach this rank. Logan works personally with his forces when the need for mass evacuations and reinforcing Guard Regiments is there. Standing alongside Generals on the battlefield, turning down offers from Lord Generals to view the battles from a distance.

Clad in heavily modified Mark III power armour with a bright red gem embedded in the center of the chest and wielding a power fist and Combi-Plasma pistol. His place has always been standing with his allies and running through the battlefield with the aid of his Jump-pack in a calm manner avoiding enemy fire with ease and providing cover to their allies.

The former captain of the 3rd Formation was the current Chapter Master, once Artorias become Chapter Master the role of 3rd Captain fell to Logan.

Keeping a crimson jewel on him as a sign of good fortune he would eventually get it embedded into his power armour once he was promoted to Captain of the 3rd Formation. His carefree nature was brought to the forefront as Logan had a nickname given to him by his brothers, "Immortal Logan" due to the crazy stunts he'd manage to pull off. One of which was the act of disabling an Ork Gargant alone, jumping out of its mouth as the entire thing exploded.

Captain Tristan
The clad in cold steel Captain of the 4th Formation has lived for millennia as a powerful Contemptor Dreadnought. Supported by the Formation's additional Mechanists and even the aid of Enginseers he has led them for nearly 5000 years.

Early in his career as Captain he would stand in the front lines with his men, refusing to put them into dangers he himself wouldn't put himself through. His weapon of choice was a great Thunderhammer called ' The Omnissiah's Fist', it could shatter a traitor's power armour with a single swing. Assisted in battle with his Honour Guards who unlike most others were equipped with additional ranged weaponry, very similar to Tristan they possessed shoulder and wrist mounted stormbolters.

He'd fall in battle when attempted to lead a squad of Astartes into enemy territory in an attempt to find and extract allies who may have become trapped by Ork forces. Once within a few hundred feet Tristan could hear the distance sounds of gunfire and screams mixed with Ork roars. Rushing ahead of his fellow Astartes Tristan would take his hammer to the Xenos, slaying many. Until his squad was cut off from him by additional Orks arriving with armour support, Tristan found himself fighting against the WAAAGH's leader. A massive Ork that overpowered Tristan and ripped his arms off, casting the broken plate aside while the Astarte still attempted to fight. The guard could do no more than fire their weaker weapons at the Ork who'd eventually fall back once allies with their own heavy support broke through the Orks to aid their Captain. Though some reports, even Tristan's, has stated that the Ork fled not because of Astarte reinforcements but by the appearance of a powerful entity. The guardsmen who survived would speak of a beautiful young woman who carried a spear, one that pierced the Ork Warlord's armour with ease and knocked the beast away with psychic might.

After such an event the Magos Dominus Mira would ensure his life was saved by his future body, the suit of Contemptor Dreadnought armour. Days later the same Warlord that wounded Tristan would take place in battle, obviously infuriated by his loss from the day before. He'd hear a roaring voice across the battlefield, taunting him and telling him he failed to kill. The Warlord furious would charge across the battlefield to seek out whoever it was that dared to challenge him. It would not be long before Tristan found him, tearing the Ork's arms off, then tearing off his legs. Holding the limbless Ork above him on the front lines. Many within the ranks of the Orks faltered in their moral and lines would break, the Imperial forces quickly swept through them.

As the millennia passed Captain Tristan became a cold and calculated leader that operated on the front line, as a living war machine and wall to protect his brothers. Ordering his commanders to lead their forces in the thick of battle Tristan rarely takes command himself. Becoming very close to the Magos Dominus Mira. She tends to him every moment she gets, viewing him as a prized possession and a great piece of work that she has maintained for longer than any other device she has held. Though she seems jealous as Tristan sometimes speaks of his angel, a woman who saved him from death.

To this day Tristan is trying to find someone to succeed him, he currently has his eyes on one TechMarine currently serving in the Deathwatch. His ancient suit of power armour and his relic Thunderhammer both kept aboard The Ark in a stasis field. A heavily modified suit of Tartaros Terminator, fit for one who takes to the field but requires heavy defenses.

Captain Gael
The strict and seasoned Captain of the 5th Formation is the oldest living Astartes in the Chapter. A master of stealth and performing hard hitting ambushes against enemy forces. It's believed Gael could very well have left his role to become the Captain of the 1st Formation centuries ago, perhaps even becoming Chapter Master due to his skills. Though he doesn't believe anyone is yet capable of training the Chapter's Initiates as well as he and changing such would only hurt the Chapter. He was once a member of the Deathwatch during his service in the 1st Formation and wished to return to the 5th Formation as an Honour Guard. Preferring the slower but thrilling tactics of the Formation he loves.

With the dawn of the 42nd Millennium and the Primaris Marines the armour he wore would change. Despite not being a Primaris Marine, Gael, due to his size (as all within his Chapter) is capable of making use of the newly created Mark X Phobos Armour more commonly used by Primaris Reivers. A dark hood attached to an equally dark cloak will typically cover his helmet.

His personal weapons are a pair of heavy bolt pistols that resemble what would become the ones commonly used by the Primaris Reivers. His goes by the names ' Mercy ' and ' Redemption '. Both are scarred and damaged over a millennia of use but function as if they were new, capable of blowing a hole through a suit of power armour with ease. Though he uses them sparingly since they're obviously not the quietest weapons he uses. His other weapon is ' Strife ', a modified Sniper Rifle that makes use of the unique ammo types one would find in the service of the Deathwatch.

Lord Chirurgeon Vinland
The leader of the Apothecarion he has been tasked with monitoring the Chapter's Gene-seed and pursuing the education of the Chapter's Chirurgeons, he has seen the recovery of many Battle Brothers and the implantation of many Gene-seeds along with the Magos Biologis. Keeping a service of Chirurgeons with him at all times they may see some of the bloodiest battles the Chapter is tasked with. Despite his vital role he ensures what he has learned has been passed to his students as quickly as possible, whenever he is away he always leaves one such student behind should anything happen to him.

Despite the Chapter's admiration for the Mechanicus and their fealty to the Omnissiah in name it doesn't mean that they are so willing to replace limbs with mechanical ones on a whim like the Iron Hands Chapter or the Order of the Sacred Flame. Vinland is experienced with these procedures despite all this. Expertly capable of changing out ones missing limb with one made of metal within minutes.

Vinland suffered a psychic attack from a Tzeentch Daemon Sorcerer and it resulted in his mind being split into two different personalities. One where he retained his calm demeanor he was known for and another that develops when in the presence of Chaos in which he becomes a blood thirsty killer seeking for the death of all heretics.

Lord Forger Boldwin
Master of the Chapter's Armoury Boldwin only follows orders from the Chapter Master or the Adeptus Mechanicus of Roitheta, granted ancient and powerful weapons that make him death incarnate should he ever take to the field of battle. Many years he'll spend upon The Ark maintaining vehicles and weapons, ensuring the machine spirits are tended to should the Chapter's Mechanists be insufficient. Boldwin's brothers match those with any other Chapter in their knowledge but they pride themselves in their faith in the Machine God, lending their teachings to their battle Brothers as a result.

Should one of the Chapter's Formation uncover an STC he'd be made aware of it as soon as possible, wishing to be the one to personally hand it over to Fabricator-General Aliya. His armour is black as a result of hiding away deep in the Chapter's workshops, any battle scars across his armour would display as blood red from the original scheme that has been crusted over by smoke and torch marks. Both his appearance and machine-like personality have earned him the nickname "The Scarred Golem".

Lord Arcanist Gwynn
Most Astartes in the Chapter may go their entire career without ever seeing this individual. Gwynn leads the Chapters Librarium in the training of all future Librarians and the recording of the Chapters entire history. He may spent weeks at a time locked away to his own personal work. Rarely appearing at council meetings, mostly communicating with the other Legionaires over a private Vox channel. Gwynn is fascinated in researching the Warp and the abilities of fellow Psykers.

Gwynn is a powerful psyker that could match most within the Imperium, perhaps even some of the most powerful Grey Knights. He's one of the few within the Chapter who was quick to embrace the Ynnari as possible allies should the moment call for it, the Chapter may have not been violent towards the Eldar but they were still wary. Viewing the race's Psykers as a step in humanities' evolution that all should look forward to, even if those such as the Black Templars or Adeptus Sororitas share a burning hatred for the "witch".

Omnissiah's Chosen Nero
Very little information is available about this individual. Nero's role doesn't place him as a typical Chapter Champion, instead Nero will be assigned tasks by the Chapter Master or Fabricator-General. Fulfilling objectives very similar to the Explorators of the Adeptus Mechanicus. Assigned his own force to accompany him onto his mission, often Veterans from the 1st Formation.

His physical appearance has been recorded to be much like any Chapter Master of the Omni Legion, passed down through the millennia, modified and repaired endless times. The armour is Crimson to represent the Chosen's faith in the Omnissiah like the Mechanists of the Chapter. Though it is an ornate design it's built to be durable but provide the wearer freedom of movement unlike most Astartes.

The common weapons wielded by him are thought to be a Thunder Sword, similar to the Chapter Masters he can swing them with one hand. His other melee weapon is rumored to be either a Spear or a pair of relic blades. He has been cited in reports to utilize a wide range of ranged weaponry. One report would state he used an unknown design of Bolter while others spoke of plasma rifles, Meltaguns or duel wielding pistols of various types. His role as the Omnissiah's Chosen and the Chapter's designated Explorator it's not too unreasonable he possesses some if not all these weapons and more.

[FURTHER INFORMATION IS REDACTED]

Chapter Master Griffith
The original Chapter Master of the Omni Legion, hand picked from the 200 Astartes recovered by the Explorator fleet led by Zubayr and given their name and titles by Fabricator-General Aliya. It's unknown why he was chosen to lead his brothers, some think it was random but others think it was a character trait that the Fabricator-General could see that others couldn't. His first assignment was to seek out a recruitment world which he accomplished by seeking a world outside their own sub-sector as there were no worlds in the Roi sub-sector that would be efficient in this task.

He was known for being a minimalist in his early career, using a bolt pistol and a power sword he fought alongside his brothers on the field of battle in the same model of power armour. It would take decades for the Chapter to even attain the numbers to create a proper command squad for the Companies, it would then be over a century when the Armoury, Librarius, and Apothecarion came to exist within the newly constructed Fortress-Monastery on Tallon Prime.

Later Griffith would dub each Company as a Formation. The brothers he had fought for years would become the 1st Formation, unwilling to separate these Astartes the following Formations would be created for their own specific purpose. He was criticized by many Chapter Masters for these actions, some even calling him a fool for these choices but Griffith stood by them. He felt breaking apart these Astartes would weaken them and as a whole weaken the Chapter.

His close relationship with both Explorator Zubayr and Fabricator-General Aliya would be the catalyst that would lead the Chapter down to adapt several of the beliefs of the Adeptus Mechanicus. The concept of the Machine God seemed ridiculous to the Astartes but the belief that the Omnissiah as the Emperor who was the most powerful Psyker seemed more believable. It was then on that the Omni Legion saw all weapons, armour and even their ships as an extension of the Omnissiah's will.

[FURTHER INFORMATION IS REDACTED]

Chapter Master Artorias
Artorias has been the Chapter Master of the Omni Legion for only 227 years, less than 100 years after his ascension to this ranks would mark the dawn of M42 and the return of Roboute Guilliman. Artorias has always had a fascination for the ages of old like many past Chapter Masters before him. Though his duties are to lead and encourage his brothers he often will take time in the day to visit the Vault upon the Ark should he be present. A powerful warrior and good-hearted Astarte he lost his eye at a young age during one campaign as an Initiate when he risked his life to save a young child, he'd never discover the ultimate fate of the child but it's what truly started his drive to protect the Imperium's people.

Chapter Master Artorias wears the oldest suit of power armour in the Chapter, passed down to every Chapter Master, created from parts of other suits that the Chapter masters had worn before achieving their role. His helm resembling that of ancient knights of Terra's history. His left pauldron displays the Chapter's emblem while his right is made of a thicker armour to act as a shield should the user need to protect their head. His left arm makes use of a power fist with an ancient and powerful storm bolter attached to it. Commonly wielded in his right hand when upon the battlefield Artorias will use one of the Chapter's Thunder Swords, a giant blade that most Astartes could only dream of wielding with one hand, but Artorias is one of those few who can. Capable of cutting even the largest Ork in half where their pieces would fall to be crushed by his reinforced boots.

Royce Mensis
A well trained member of the Chapter's Mechanists, serving most of his life in the 4th Formation under the wisdom of Magos Dominus Mira and Captain Tristan. He is typically quiet as he works to satiate the machine spirit or tend to his brother's equipment, in battle he is impulsive and never stops asking for orders or giving them out himself. His powerful relic power axe called 'ThunderBreaker' has claimed the lives of countless foes, many ranging from traitor humans to powerful Tyranids.

Despite his history as a respected member of the 4th Formation he has been sent to the Deathwatch by his Captain as a final trial, Tristan as an ancient Dreadnought wishes to one day fall in battle for the glory of the Omnissiah but wishes for one to succeed him. He expects that Royce may in fact be the man who will do this. This has yet to be seen.

Chapter Relics
''Most relics within the Chapter are unknown, this is due to many are taken upon the destruction of a renegade Chapter. The following listed will be those who are in active use by the Chapter.''

Cerberus' Fang: a sturdy shield capable of acting a sheath that charges the powerful blade with the energy is uses to cut through thick armour plating with ease. The last owner of this weapon before coming into possession of the Omni Legion was Chapter Master Ulfric Stormhowl, before he and his Chapter were slain. It is currently in the care of Captain Lionel of the Chapter's 1st Formation.

Heaven and Hell: A pair of Lightning claws that were discovered by the 4th Formation and Captain Tristan in mid-M38. Taken from the possession of a Renegade Warband's leader, thankfully the Astartes hadn't fallen to the temptations of Chaos and the weapons were salvageable. The weapons would spend the next 1000 years being purified by the Chapter's Mechanists and the Tech Priests of Roitheta. Eventually deemed purified and their machine spirits saved. Vilhelm would choose these as his weapons of choice upon being promoted to Captain.

Meeting Man and Ork (497.M34)
The Civilised World World of 'Patron' in the Charadon sector was under attack by an Ork WAAAGH!! and was protected by the Astra Militarum for days. The battles waged with many deaths on both sides. The Guard regiments worked together with the planet's populace to contain the Orks into a single continent. Soon the planet's planetary defenses would break as the bulk of the enemy would make landfall. Weeks would pass and roughly 37% of the planet would become captured and controlled by the Xenos. All that could be done for now was to quarantine the enemy until reinforcements would arrive. It took the cost of millions of lives, both Militarum and civilian. Eventually the Orks were forced into funneling their forces to the southwest, where the distance between their continent and the next was shortest, the Imperium could only buy time.

Aid would arrive after nearly a single year of battling the Orks, their fleet would be overwhelmed by the arrival of the Imperial Navy and a handful of ships controlled by the Salamanders, those of 3 Companies. The Navy broke through their defenses with the assistance of Astartes Strike Cruisers. The Ork fleet would crumble under the combined efforts of all those involved. It wouldn't take long for the Astartes to depart to the planet's surface. It wouldn't take long for the Omni Legion themselves to appear with their own small fleet, shortly after the establishment of their recruitment world.

Meeting with the regiment's commanders and Salamander's Captains, Chapter Master Griffith formulated a plan. The Astartes would lead an attack into the heart of the enemy. Piercing through the borders of the captured territory they and the Imperial guard sought to find and kill the Warboss. It would takes many days for the attacks from the Orks to slow and allow progression through the land to quicken. Cities devastated by the Xenos became giant graveyards that they would pass through, sometimes stopping to rest for the sake of the Guard. Astartes created perimeters stretching for miles to ensure their safety.

Eventually the forces of the Imperium would receive further aid as the 'Terra's Cockroaches' would also appear in the system. The entire Chapter led by Chapter Master 'Ubbert So' coordinated an attack by making planetfall opposite to the already engaged Imperial forces to throw the Ork forces off. Approaching from the East and North while the rest of the Imperium continued their advance from the South and West, some aiding the Northern Cockroaches.

Many months of battling led everyone into the heart of the enemy, the Ork citadel constructed was massive, once a capital city of the world. It would be hit by a barrage of fire from Leman Russ tanks and to the shock of the Guard they soon found themselves aided by Imperial Knights from the Forge World of Roitheta. The battle would rage on for days. Astartes breaking through the Ork ranks with ease with the guard in tow, given a seemingly endless source of inspiration from the Astartes. At the climax of the campaign Chapter Master Griffith stood atop the largest tower holding up the severed head of "CraneJaw" as his citadel was cast in flames by the Salamanders, the Orks moral was broken and they'd quickly be wiped out. All their remaining forces hunted and slaughtered by the Astra Militarum and Terra's Cockroaches over the span of days. By the conclusion of the campaign the Salamanders lost a full Company's worth of battle brothers while the Omni Legion suffered the same, leaving only half of the Chapter still alive. This would become the catalyst that created the Omni Legion's original Veterans, Astartes who waged war for over a year at the cost of most of their brothers whom they had hardly known but wouldn't forget.

Sadly the entire continent was deemed lost to the Orks and would need to be purged with fire, the Salamanders would aid in this endeavor. The Omni Legion would aid the Salamanders in this endeavor and they were proud to serve with them during this process of cleansing the landmass. The Terra's Cockroaches would leave the system after the battle was considered won, moving onto their next campaign. After the Omni Legion departed they wouldn't be heard from for centuries as they recovered from their losses and built their Chapter into a mighty military force.

Rise of the Sol Devoratores (837.M35)
During a campaign in the Ultima Segmentum that involved the Omni Legion's 1st, 3rd and 4th Formations coming to assist the Imperial Guard so would come the rising Titan Legion. A small force of the Legion's Warhounds and hundreds of Imperial Knights once belonging to Knight House Solaire would make planet fall to aid their Imperial allies. Warhounds would lay waste to the enemy Gargants due to the concentrated fire of their powerful weapons. Knights would take to the battlefield's front lines alongside the Omni Legion to fight off the Ork threat that could have overpowered them without their help.

Many weeks would pass till the conclusion of the battle, much of their world had been ravaged by the Xenos. With the aid from the Forge World Roitheta and the Chapter the world was considered saved. Despite this much of the continent was purged with flame by the Chapter and the Titan Legion to ensure no Ork spores survived.

Ashes of Hatred (238.M36)
The first time the Chapter met the Adeptus Sororitas was when they were once known as “The Brides of the Emperor”, in an event where the world of "Pyntear" was thrown into a state of civil war. The 3rd Formation attempted to destroy the resistance, it took mere hours for the rebels to throw down their weapons and surrender to the Legionaires. Days later the Sororitas arrived on the world with additional Imperial Guard support and to the shock and anger of the Astartes they begun slaying every citizen, even those who never held a weapon as they set hospitals and shelters ablaze. Not allowing a single potential heretic survive this day.

Furious by this the Captain took to orbit to speak personally to the Canoness about this. He towered the woman but she wasn’t threatened by this Marine. Warned that such a reaction to this situation could make the Ecclesiarch suspect that he was defending the traitors of Goge Vandire and he could be a heretic himself. Speechless at such a claim the Captain could do nothing but apologize to the Canoness and turned to leave with his brothers. For a time the Chapter would refer to the Adeptus Sororitas as, “Vandire’s Vixens."

Bonds born in flame (919.M36)
Not long after the establishment of the new Order the Sisters would quickly become widespread throughout the cities of Tallon Prime. Their religious faith in the God Emperor at this time was still kept in check by their own responsibilities to the people, their Order originated from members of the Order of the Argent Shroud.

Tallon Prime at that time would soon be struck by an Ork tribe that would focus its attention on the dark side of the planet. The Sisters mobilized to counterattack alongside the Tempestus Scions regiment of the Psian Venatores while they attempted to contact the Omni Legion for support. Days would pass and many would die to the green-skins but the overwhelming use of flamers and Las-weapons would keep many of the Xenos at bay. On the 5th day the 2nd and 3rd Formations would arrive to finally fight off the remaining Orks, any of those who'd attempt to flee would fall victim to the planet's savage wildlife. Learning of the Sororitas' selfless acts alongside the Scions would change the Chapter's earlier outlook and impression of the Sisters after so long. Though not all of them.

Extermination of the Pale Fangs (Exact date lost. Estimated late M37)
One of the few documented instances of the Omni Legion's actions in destroying a Space Marine Chapter.

Rumors spoke of a possible betrayal by a Space Wolf successor Chapter, the Pale Fangs. Once this news reached the High Lords of Terra it would as quickly reach the Adeptus Mechanicus. The idea of a renegade Chapter making use of the weapons and armour supplied by the Mechanicus was beyond worrisome. As a result the "Hyldar" system was made the target for the Omni Legion.

Posing as the remnants another Chapter who was sought to be destroyed the 3rd and 4th Formations arrived at the Hyldar system requesting assistance in exchange for guarding the system as additional forces. The Captains of the Omni Legion confirmed that the Chapter Master intended on leading a stance against the Imperium, believing that those of his Chapter were deserving of being able to live their own lives. He himself was recently married. The Chapter wanted to be treated less like weapons and to be given the respect of being mankind's greatest defenders. The Omni Legionnaires worked to move the civilians to safer locations to avoid getting caught in with the cross-fire.

After several months of living alongside the Pale Fangs the Legionnaires picked up the signal of their space forces engaged with an enemy fleet within the system. In truth this was the 1st Formation with the aid of the Imperial Navy and the Jianghi Riders Chapter, the Pale Fang's fleet lost their communications through sabotage and psychic interference by the Omni Legion forces that posed as their allies. Unaware of this fact the forces on the planet surface didn't know their forces were being slaughtered by both the Imperium and their so-called allies. The planet's forces would be thrown into disarray as Omni Legion members begun to kill Pale Fang Astartes, they never expected this betrayal. Even the Chapter Master would see his end before he could even leave his throne room, slain by the two Omni Legion Captains while his three Pale Fang Captains were killed by the eight Omni Legion Honour Guards.

The sky would become filled with drop pods as both Omni Legion and Jianghi Riders descended upon the world, streets would become lined with the corpses of the sons of Russ and their own Serfs. No one would be left alive in the cities around the entire planet, within a single day the entirety of the Pale Fang Chapter was slaughtered. It's assumed that the ultimate fate of the civilians of the world met their ends by the blades and bolters of the Jianghi Riders who would have butchered them all for simply being associated with the Pale Fangs.

The weapons, armour and vehicles taken by the Omni Legion would be handed over to the Mechanicus so they may be properly cleansed. It isn't known how many made their way into the Omni Legion's Armoury.

The Feeding (830.M41)
Upon the Ice world of Roisigma the workers within the mines were horrified to discover something that needed the immediate attention of the Omni Legion. Within hours the 2nd Formation arrived at the request of the Mechanicus that managed to system, they were filled in on a Xeno threat discovered frozen in the ice mines. Tyranids.

Captain Vilhelm with his Executioners and a squad of Veterans all took to the world's surface to randevu with the Skitarii forces that had managed to secure the sector. Leading the assault themselves deep underground the Astartes easily dispatched the hundreds of Xenos that struggled to fight back in the black frozen caverns. Vilhelm and his elite forces note they had encountered similar creatures in the past during their service to the Deathwatch. These creatures were far less humanoid and more insectoid than what they had known but the resemblance was uncanny.

Vilhelm reached the deepest depths of the mine they had entered and entered an ancient Terran ship that the miners had been working on uncovering. Within they encountered Tyrant Guards. Vilhelm and the Executioners themselves fought against them while the Veterans protected them from swarming Tyranid Gaunts with the roaring fire of their storm bolters. One of Vilhelm's Executioners was slain by the sudden appearance of the Hive Tyrant. Enraged by this he charged the monster and clashed his powerful lightning claws with its own, one of its whip-like appendages wrapped around his leg and tried to knock him down but it was cut clean off by the reinforcements of his Executioners. It would not take long for the Veterans to turn their attention to the Tyrant, Skitarii had begun to flood the ship with the intention of wiping out the remaining Xenos that dared to dirty the walls of this ancient relic of mankind's history. The ship was large and they could only do so much before they were purely on the defensive, working to secure an escape for the Astartes.

The Hive Tyrant was no match for the combined efforts of nearly a dozen Terminators, three Honour Guards and the Captain of the 2nd Formation. It was blown apart and cut to pieces by the Astartes. As the Xeno fell the remaining Tyranids fled into the dark depths of the ship. Vilhelm ordered his Veterans to continue working with the Skitarii to exterminate the remaining Xenos.

[FURTHER RECORDS ARE DEEMED CLASSIFIED]

Rise of the Dusk Born (977.M41)
An attack upon the Penal World of "Lastonoe" challenged Lucan and the rest of his Formation while aiding an Imperial Guard regiment who also answered the call to aid the planet's forces. Confronted by the forces of the Chaos Warband of the "Dusk Born" and their legions of cultists who freed the prisoners who would attack the forces of the Imperium in masses. Terminators from the 1st Formation and the Warband Astartes were powerful titans of the battlefield that tore through cultists and guards alike as they attempted to slay one-another. Lucan personally fought against "Estoden the Unrelenting" while his Honour Guards fought his Terminators.

Lucan was faster than Estoden but only because the traitor was slower because of his Terminator armour, Lucan couldn't get close without risking death. For hours the fight continued as the world burned and the situation only got worse with reports of daemonic incursions appearing around the world. Lucan was contacted by Artorias who ordered that he and his men fall back, as they did so the Imperial Guard covered their withdraw, Lucan could hear Estoden laughing and taunting him as the screams of Guards almost made him run back. Lucan never found out the fate of the traitors as he and his brothers left the planet by order of the Chapter Master and could only watch in silence as the Imperial Navy bombed the planet, wiping it clean of all life.

Chapter Colours
The armour of the Omni Legion primarily have a silver colour scheme with a red trim along the pauldrons, knees and the plating covering the stabilizing jets of their backpacks. Every Legionnaire has blue eyes on their helmets. Sergeants are to wear older models of helmets to help them stand out better among their brothers and display the Astarte's legacy. Captains aren't held to a specific code and are free to appear as they please as long as they display the Chapter's emblem and colours and their Formation's number.

The origins of their colour scheme comes from a choice made by the Chapter's first Chapter Master. Standing alongside Fabricator-General Aliya the discussion of the Chapter's colours were being spoken about. The first Chapter Master Griffith turned his attention to the robes that were wrapped around Aliya's mechanic frame. Looking at his silver armored hands he figured that nothing extravagant would be necessary. A similar red is all they would need.

Chapter Badge
The Omni Legion's Chapter badge is a white coloured Cog Mechanicum icon - the ancient symbol used to represent the Adeptus Mechanicus and their religious faith, the Cult Mechanicus. This emblem takes the form of a halved human/cyborg skull, which represents the fusion of flesh with the holy machine. This icon is centered upon a white circlet centered on a field of red and surrounded on the left side by a half-cog symbol, which represents the Chapter's close ties with the Adeptus Mechanicus.