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, and the Adepta SororitasOrder 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 the allied Adepta Sororitas Order. The Inquisition still requests frequent examinations of the Chapter which is handled by the Magos Biologis themselves, with reports from them and the Chapter itself. Best described as an armed cleanup crew for the Adeptus Mechanicus, they search countless systems for traces of technology lost over the millennia.

Founding
Early in M34 a small Explorator Fleet from the Forge World of Roithea 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 “Myrddin” 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 Myrddin 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 the Adeptus Mechanicus and High Lords of Terra. What is known is that inside this fortress were Astartes. In close to 200 pods they slept. Already clad in power armour, some in Mark III and other in Mark IV. Other pieces of technology from the great heresy itself, suits of Cataphractii Terminator armour and unused Contemptor Dreadnoughts. Even a perfectly intact Gene Seed was found in mass. One more item found inside was the one thing Explorators such as Myrddin can only pray to see once in their lifetime, an STC.

Upon returning to Roithea a small number of the Astartes were released from their pods with the Skitarii surrounding them as they stood before “Evienne”, the Fabricator-General who looked down at the confused Marines. Days of questioning proceeded as the High Lords of Terra were informed of this discovery. Through the questioning it was determined these Astartes had no memories of their conception or even their identities. This would carry on for years.

During this time a larger Explorator fleet was sent back to Vintis but more properly prepared to haul 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. Due to the proximity the system had to Baal the Blood Angels Chapter sent the 3rd Company to investigate by orders of the High Lords of Terra. 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 world 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 Barges. 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 was to pursue technology in the same way as the Explorators as a result of the major loss of their fleet. All the while remaining on standby and prepared to go to battle at a moment's notice. Shortly after their founding another Formation (Company) was created with the intention of seeking a world to call home for the Chapter and construct their Fortress Monastery.

Taking a small fleet of a single Battle Barge and six Dauntless-class Light Cruisers this new Formation which would eventually become the Chapter's 5th Formation that would lead the training of all future Initiates.

Tallon V
Hosted the Chapter and their Fortress-Monastery from the year 513.M34 to 398.M37 In the year 487.M34 the Death World of Tallon V was discovered by the Omni Legion led by their first Lord Paladin "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 V was found. The temperature of the world could reach heights that would kill any normal human. The only protection from the rays outside of man made structures are caves or the thick clouds of sand that can block out the sun for days. The planet itself has a slower rotation, mixed with its orbit around the sun the majority of the planet to always face the Sun. There were thousands of human settlements that existed along the borders of the sunrise and sunset, named “The Divide”.

Many of these early settlements were initially hostile toward the Astartes and as a result were wiped out by them in self defense. Eventually the Astartes were able to get in contact with leaders of several of these settlements who convinced the migrating groups that they were going to strike a deal with the Astartes. They warned the other groups to move far away weeks ahead in case things went wrong and the Astartes became hostile. In truth these leaders hoped they would become more powerful by serving the Astartes which they did very quickly, taking a knee to the Astartes they swore their loyalty to the Imperium.

Over the millennia the world was occupied by the Administratum as it began the construction of large cities that the planet’s former occupants moved away from. These cities were constructed on the dark side of the world to ensure the planet’s populace wouldn’t be in danger of the sun’s heat. The darker side of the world has it’s shared dangers as the wildlife outside the city has forced the construction of large walls with powerful lights to keep away many of the light sensitive creatures. Ranging from massive mammal creatures with a bone-like armour on their flesh that crave humans to small insects that will burrow into human flesh to seek warmth.

Life on 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. The Adeptus Mechanicus holds a large presence on the ship as part of the agreement between The Omni Legion and Roithea, all technology recovered by the Chapter is to be overlooked by Explorator Myrddin before it’s taken to Roithea to ensure it’s condition and any additional research performed before it’s turned over. In the time the Chapter has worked with the Adeptus Mechanicus of Roithea there has never been a situation where an STC or anything else of value has been hidden by the Chapter from the Mechanicus.

Typically The Ark will hold its position between Roithea and Tallon V, 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.

Space Marines of the Omni Legion enjoy the sounds of music that can be heard throughout the Ark, 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 vehicles of the Chapter are capable of projecting these sounds over large distances as a means to raise moral 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.

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.

The creation of this place was thought of by the Chapter's Paladins as the Lord Curator complained for many years that the items the Chapter collected was growing too vast to contain within their original Fortress Monastery

The only members typically permitted to enter the vault are the Curators, Lord Curator (High Chaplain) and the Lord Paladin (Chapter Master) himself. Any other who attempts to enter would be stopped by the Vault's security protocol which seals the Reclusiam and alerts everyone on board the Ark.

Marines of the Chapter are only welcomed into the Vault by the Curator’s once they achieve the rank of Knight Sergeant, granted a weapon and helm from the very Vault itself.

As expected the Master Curator and Lord Paladin are the only ones who knows every single item that exists in the Vault, which stretches for several miles, there hasn't been any clear measurements. There are rumors that there are actually hundreds of live organisms inside the vault, a few loose running around unable to escape the secured Vault.

Most relics of the Chapter are kept here while the Paladins 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.

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.

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 have 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 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 AdMech 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 are been known to track down and Renegade Chapters and execute them with extreme prejudice. The Venom Thorns Chapter is one such example after they sustained critical losses by the hands of a single Chaplain of the Imperial Fists. 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 Adeptus Mechanicus 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 each member of the squad must recover something for the Mechanicus, only then will they deemed worthy explorers for the Imperium.

Knight (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.

Knight Sergeant (Sergeant)
Squad leaders of Legionnaires are granted this title because of their iron resolve and unbreakable bond with their battle brothers. Wielding a relic weapon from the vault on The Ark and donning the helm of a past brother from crusades long since past. 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.

Knight Commander (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 Paladin of each Formation, working to relay their orders to the Legionnaires. All Knight Commanders 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.

Paladin (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 a Chapter Curator who assists in organizing and guiding Formations during their campaigns. Each Paladin changes their name to fit their new title for whichever Formation they lead. Nothing such as numbers are given to these Paladins as a way to provide a form of pride and mystic to other Chapters. Only the Curators, Lord Paladin, AdMech of Roithea and High Lords of Terra have the knowledge of how many Paladins have led each Formation.

The Lord Paladin (Chapter Master): The leader of the entire Chapter is given this rank, this rank was only given this name after the Chapter was renamed The Omni Legion. The first Lord Paladin is rumoured to be not even the second or third Chapter Master. The first Lord Paladin was named “Artorias”. After this the new Lord Paladin adapting the old surname of the previous became tradition as it did with the Paladins.

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 Sorcerers of the Chapter their training is directed by the Master Sorcerer.

Sorcerer (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.

Lord Sorcerer (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. Though to what ultimate goal?

Curators
The role of these Marines are the organization and documentation of the countless treasure and relics that are accumulated over the millenia. Outside of battle it is the duty of the Curator to lead morning prayers onboard the Formation’s Battle barge in the Reclusiam and clean all relics of the Chapter that is with them. Onboard The Ark they work days organizing and maintaining the Chapter’s relics or anything that is recovered by Formations and brought to be placed into the Vault.

Each Formation has one of these men as part of their leadership. Keeping moral high the Curator charges into battle to destroy the foes the Imperium deals with every moment of every day, inspiring his fellow Legionnaires with his words and demeanor.

Lord Curator (High Chaplain)
Not having any direct subordinate like most Chapter’s he commands the Curators and watches over all the Chapter’s relics whilst they remain on the Arc and any relic that should be moved must go through him. Always near the Vault at all times of the day he and the Lord Paladin are the only ones who can open it without consequence, opening the great door at the end of every day for the Curator’s under his care to go in and perform their duty.

Being one of the few on the Chapter’s Council it is his duty to relay all concerns or discoveries to the Paladins and Lord Paladin. Rarely ever going to battle he is still one of the deadliest Astartes on The Ark, rumored to match the Lord Paladin himself.

Techmarines
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. Commanding a small force of Servitors on the battlefield they will bring more to work in excavation missions.

Forge Lord (Master of the Forge)
Working alongside Explorator Myrddin 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. Leaving his work unattended only should a meeting of the Council be held.

Hospitallers
he medics of the Chapter who go into battle and work to keep their fellow Astartes alive or extract their Geneseed 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 working within the Chapter’s Apothecarion.

Lord Hospitaller
As master of the Apothecarion he organizes the placement and work of every Hospitaller 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 Paladin and his HQ, holding high a flag that displays the very Formation’s emblem and fighting alongside his brothers. Running into battle with the Curator he rallies his brothers alongside him to strike down the foes of mankind. The words of the Curator 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”.

Honour Guards
Like most Chapters Twentyfour exist within the Chapter. Though unlike most Chapters, Four guard and fight alongside the Paladin of each Formation and the final Four stand alongside the Lord Paladin. 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 Paladin vital. Should the Paladin fall in battle these powerful Astartes would stand in his place till an official replacement is decided by the council.

Order of Battle
The leaders of the Chapter operate and command the Chapter from The Ark, a council between the leaders of all the Formations and the Chapter's specialists meet in the hall of the Lords. Located in the heart of the massive Fortress Monastery they sit at a large round table to discuss the future of the Chapter. Strategies of the Formations and discoveries made by Librarius and Reclusiam are other important topics. Even the ancient Explorator who discovered the Astartes aided by lower ranked Magos hold a place in the Chapter's higher ranks.

Each Formation of the Omni Legion is lead by a Paladin who has a pair of Knight Commanders, Curator, Hospitaller, Sorcerer and a TechMarine alongside him. Some may have additional Apothecaries or TechMarines.

Formations are not labeled through coloured paldrens but rather their designated emblems and squads are numbered.

Unlike most Space Marine Chapters that have 10 Companies, the Chapter has 5 Formations with roughly 200 Astartes per. This is a result of the Chapter being founded from the 200 Astartes whom became the 1st Formation as future Formations were built on in time.

Each Knight may be assisted in missions by a Servitor, assigned to carry extra ammunition or attachments for weapons. Typically used in excavation missions. An Initiate will not be permitted the use of one to teach them proper discipline as part of their training.

Interesting to note is that the Terminator units within the Chapter are actually a large mixture of the Cataphractii Pattern, the Tartaros Pattern and the more standard Indomitus Pattern, though these are reserved for the 1st Formation and 2nd Formation. Due to their superior defenses the 1st Formation is the only one of the two granted use of the Cataphractii for nearly exclusive use during mission onboard Space Hulks or boarding enemy ships.

The chart below, is the Order of Battle of the Omni Legion as of 111.M42:

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 Roithea specializing in such weapons, despite this they are still trained as effectively in melee combat. The only melee specialized troops are Terminator Squads or the Chapter's Dreadnoughts.

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 later.

It has become normal for these Legionnaires to prefer force or power weapons for melee and see the Chain weapons less effective and the sounds they make make ambushes more troublesome.

The HQ Squads of each Formation are led into combat by the Formation’s Curator (Chaplain) rather than the Paladin. Followed by the Hospitaller (Apothecary), Sorcerer and the Formation's Ancient.

Formation 1
This Formation is one of the most battle hardened of them all, like most Chapters. The Sorcerer rains fire and lightning from the sky to smite any being that dares challenge the Chapter’s might as the Curator marches the battlefield encouraging his brothers to rally by the Ancient whom holds their Formation’s flag high. The hulking Dreadnoughts march across the war torn worlds to purge any xenos or heretic that dares cross their paths.

The Veterans within the Formation have been trained to infiltrate enemy lines to catch them by surprise if Intel suggests the Formation is drastically outnumbered. The most common use of this is tactic is setting explosives throughout the area or to diverge enemy attention away from the bulk of the Formation to ease flanking. Recent years has seen the appearance of the Primaris Marines, those who spend enough time training with fellow Astartes eventually earn their role as a Hellblaster, making use of the new powerful plasma weaponry.

Spending the millenia scouring the galaxy for relics or lost technology they demonstrate the Chapter’s true purpose with the might of the Emperor’s chosen. Space Hulks 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 Roithea and the worlds that surround it these brave soldiers of this Formation tend to operate in the Nephilim and Charadon Sectors. Similar to the 1st Formation this Formation possesses Veterans within their ranks with Terminator armour.

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 Emperor of Mankind.

Working also as a designated cleanup crew of the Chapter through the use of Aggressors and Dreadnoughts. 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 to prevent the Orks whose form of reproducing is spreading their spores.

Despite the contempt many brothers may feel toward the 1st Formation they are determined to fulfill their role as warriors of the Emperor of mankind. Even if it is without any joy.

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. The Dreadnoughts and Tactical Squads charge to the front lines to draw fire away from lighter armored allies.

The use of Reiver Squads have become important to flank enemy forces to catch them off guard, aiding in creating gaps in the enemies formations through distracting or sabotage. Openings for allies allowing them to charge through the enemy formation and finally break their ranks and use the opportunity to pick the enemies that either attempt to flee or are cut off from their allies.

Aiding the Imperial Guard is the most common mission this Formation is assigned or chooses to follow.

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. HellBlaster squads inside Repulsors as Devastator squads await deployment in Land Raiders. 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.

Once an Initiate completes his promotion to a Knight they'll join the Devastator squads which play an important role in defending strategic positions. HellBlasters 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 TechMarines and their Servitor assistants mandatory. Many Servitors join the front lines with the Tactical Squads and Centurions 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.

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. Intercessors are the most battle hardened outside the HQ Squad so they'll be the first ones to run to the front lines with their superior armour and weapons. A force whose purpose is to work and guard excavation sites without the expectation of heavy enemy resistance. The singular Dreadnought is named “Gough” accompanies this Formation.

The training these Initiates go through takes many 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.

Specific Initiate Squads are given the roles of Infiltrators to sneak behind enemy lines and either gather as much information on their forces and positions as possible or cause damage to their vehicles without being detected. Infiltrators are also used to hunt for enemy commanders during larger skirmishes should the Chapter encounter enemy resistance. Initiates have also been trained to survive for months to years while away from most of the Formation should an overwhelming enemy force appear and the Formation needs to fall back, going as far as to divide their forces to gain a tactical advantage. Taking this chance to further their training they’ll spend this time picking apart enemy forces.

The Hospitallers stay back to provide aid to those who’d need it and keep a close eye on all Initiates to see if they display any mutations.

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 divine entity and worship of him as such 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. The Omni Legion believes the Omnissiah is in actuality the the Emperor of mankind, thanking the Emperor for things ranging from the bolters in his hands to the very ships they stand in.

Recruitment
Recruitment for the Omni Legion comes from the world of Tallon V. The populace of the world has made advancements in the recent years because of the Chapter and the discoveries they have made. Large cities created to house the majority of the civilians while the military makes use of the harsh environment to further train their soldiers.

Every 150 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 their youngest as long as they are between the ages 4 and 10. The family would be visited by their child whether they succeeded in becoming one of the warriors of the Imperium or they became a Companion, either way they’d be given time for leave to see their family one last day before returning to their duty and will never see them again.

Knights
The ceremony in which the Initiate graduates to the rank of Knight details them presenting whatever relic they recovered in their latest mission to the Formation Curator and their power armour is presented by the Formation’s Techmarine. The Formation’s Paladin makes a point of being present to see his men take the next step to becoming full fledged Astartes.

Once the newly appointed Knight has been encased in his armour he stands with the Curator and is handed the relic he had uncovered. Holding it above his head as his battle brothers cheer. Soon he will be assigned a role as a Devastator squad member.

Knight Sergeants
The Knight enters the Ark’s Vault with the Curator. The Curator 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 Knight.

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

Paladins
Upon the death of the Formation’s Paladin a meeting of the other Paladins 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 with their Curator. The Curator addresses the Formation as the he announces the news of their new Paladin and he is blessed by the same Curator.

After the Ceremony is finished the entire Formation is given the day to rest as the newly appointed Paladin goes to meet 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 become part of the Astartes armour, usually along the pauldrons.''' '''When an Astartes perishes in battle his body will be cremated and placed into a coffin after the Progenoids has been extracted by an Hospitaller. 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 the Formation’s Curator. 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 Curator.

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 Curator of the Formation leads a line of Coffins holding the Ashes of the deceased Astartes to the front of the Great Hall, followed by any Companion who is to attend the funeral. The coffins pushed by Serviators are brought to the front where the Curator gives a speech to the entire Formation. 
 * 3) Each Companion gives his word on the deceased.
 * 4) The Curator presents the skulls of the previous Companions from the Astarte’s armour and reads out the names of each one as they’re engraved on the bone. Placing them into the ashes inside the coffin one after the other. The old armour is repaired and cleaned for the next Astartes who’d replace the deceased. 
 * 5) The coffins are then closed but not sealed. 
 * 6) The Astartes of the Formation return to their duties. The Companions that lost their superiors meet with the Curator who summons the Hospitaller and a Tech Priest. The Companions are given two options. 

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

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

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 once more average for Astartes.

Genetic Idiosyncrasies/Mutations
After being rediscovered by the Imperium there have only been 2 mutations to their gene-seed organs found after thorough tests and examinations.
 * 1) The Betcher’s Gland, similar to the Imperial Fists and Raven Guard Chapters. The Omni Legion doesn'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.

Though not a defect in their Gene-Seed organs themselves, the Astartes have a strangely high 35% chance of eventually reaching a maximum height of 10 feet as opposed to the rest of the Chapter's average 8 feet.

Additionally Astartes of this Chapter seem “calmer” than some other Space Marines, not as though they’d 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. 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 with Astartes who have been expected to and ordered to slay every type of xenos 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 Legion 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 and the Omni Legion didn't press.

Both the Dark Angels and the Omni Legion are very secretive, but for very different reasons - for the Omni Legion 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.

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 missions. Despite this the sheer number of successor Chapters they have and the proximity to Ultramar would be a fool's desision 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 these feelings improve for the most part, within the Chapter. The return of the Primarch also saw the improved plasma weapons through the newly inducted Hellblaster squads, which greatly pleased the Omni Legion.

Salamanders
Relations between the Salamanders and the Omni Legion is very good 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 honours 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.

The close proximity of Nocturne to the Forge World of Roithea and Tallon V means both Chapters work with one another frequently.

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 V which was a mere 10 years later. 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 3rd Formation Space Marines stormed the lines to aid the Guards. Within days the 4th Formation arrived and with their assistance the forces the Orks were wiped out.

Understanding the Guard’s dislike for many Astartes, the idea of fighting for months or even years and then another force coming in to take what satisfaction you could have. 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.

Adeptus Mechanicus
Thanks to Roithea 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 Roithea supplies the Chapter with all the weapons they need.

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.

The first time the Chapter met the Adeptus Sororitas was in the year 393.M36, when they were once known as “The Brides of the Emperor”, in which the world’s populace 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 the Imperial Guard 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 Paladin 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 Paladin 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."

Even after The Age of Apostasy the only Order the Omni Legion will agree to working with is the Order of the Argent Shroud 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 V” 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.

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 millenia.

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 by the Inquisition, 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-xeno 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.

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 Roithea they encounter attacks from the Ork Empire of Charadon on many occasions. Always 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 Roithea 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 Roithea 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, 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.

Paladin Lucan:
One of the most well known and fondly remembered Paladins of the Omni Legion's history, Lucan was the Paladin of the 1st Formation till the dawn of the 42nd Millennium. He wielded a relic of the Formation, a sword he named "Helm Breaker." He was tall, even for an Astarte. 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 he'd ultimately die by the hands of Kharn the Betrayer during the Fall of Cadia.

His earliest records that can be traced back to was well into his position as the 1st Formation's paladin, he led his Formation to aid in defense of a world known as "Ebiri", at the time it appears to have been an "Agri World" within the Segmentum Ultima. Exact dates cannot be found but in the year 925.M40 the planet was changed to a "Dead World".

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. Paladins (Captains) aren't held to a specific code and are free to appear as they please as long as they display the emblems of the Chapter and their Formation.

The origins of their colour scheme comes from a choice made by the Chapter's first Lord Paladin. Standing alongside Fabricator-General Evienne the discussion of the Chapter's colours were being spoken about. The first Lord Paladin Griffith turned his attention to the robes that were wrapped around Evienne's mechanic frame. Looking at his silver armored hands he figured that nothing extravagant would be necessary. A similar red trim is all they would need. The silver armour they wore that was only slightly adorned was enough for the rest.

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.