Centurion Sector

The Centurion Sector and Drameara Expanse are a large area of space located on the western edge of the Segmentum Obscurus in the Cygnus Arm close to the helican sub sector and at the very edges of the astrominican in fact much of the centurion sector is beyond the emperors light and the Drameara Expanse  lies entirely beyond, the centurion sector has long been under the control of the Adeptus Mechanicus who maintained 8 Forge worlds within its borders while the Drameara Expanse  is a largely unexplored and is believed to house hundreds of human worlds. In recent years the 2 areas have been the site of several major incidents starting with the cataclysmic centurion war which tore the sector apart and allowed xenos, seccesionist humans and other forces to claim the area for themselves and the ongoing cerberus campaign to eliminate these enemies and restore the Imperium's control.

History
The Centurion and Drameara Expanse history stretches back thousends of years, they were first discoved and colonised sometime during humanitys golden age of technology and centurion soon became a trading and manufacturing hub as humans from accross the galaxy flocked to this new area but the coming of Slaanesh ended this prosperous age. The age of strife as it was known destroyed all progress for humanity ending it expansion and left it struggling to survive, the centurion sector fell into war and turmoil as individual world's fought for control, what little is known about time indicate that some were able to maintain a semblence of civillisation and even contact with nearby worlds but for most this was a time of unending war and bloodshed. In M30 the age of strife finally came to an end after 5 thousend years and on terra the Emperor revealed himself and launched his great crusade, according to imperial records the sector was rediscoverd some 10 years before the outbreak of the horus heresy by a fleet led by the Primarch Rogol Dorn and his Imperial Fists. Following the rediscovery the major manufacturing worlds, while not forge worlds were advanced enougth that the mechanicum were granted control over them and soon turned them unto fullyfleged forge worlds in their own right. any attempt to explore the Drameara Expanse was abandoned as a result of horus treachery During the Heresy the 8 Forge World would remain loyal and were subject to repeated attack from traitor forces but thanks to a mysterious astartes blackshield force known the Knights of the Emperor which had made this area of space their home were able to survive and prosper in the years following. Imperial records from the next 10 thousend years are fragmentary and not entirely reliable but they seem to show that the sector was relatively peaceful with very few incidents of note, this all changed with the rise of Fabricator-Genaral Atilla, master of the massive forge world iterium which soon became regarded as the sector capital. Atilla had the ambition to break away from the imperum and the mechanicum and forge himself an empire, 6 of the other forge worlds would join and ignite the Centurion War which would claim billions of lives and leave the sector a barren wasteland, xenos and renegades soon swamped the sector and and carved out their own empires leaving the imperium with little choice but to order a second campaing to reclaim it.

Heresy
During the terrible times of the Horus Heresy the sector came under repeated attack from tratior forces but the blackshield force that protected it was imensivly powerful. It was comprised of Astartes from all 18 of the legions along with 2 other Astartes forces who hid their origin and wore simple black and grey power armour. What reason this force had to break away from the rest of the Imperium is unknown as is the their fate, all that is known is that they dissapeared after the end of the heresy leaving behind a message on the planet of Angel's Hope that stated the names of all of the commanders and stating their intentions to leave imperial space and take their chances in the void. In the 10 thousend years since their dissaperance nothing has been head of them and their exploits have passed into myth.

781.M41 - 931.M41 The Seeds of War are Sown
The reasons behind the coming war are not known in great detail but imperial scholers have pieced together some parts of the story and seems that Fabricator-Genaral Atilla was always known as highley arrogant and paranoid individual who chafed at the limitations imposed by the imperium and longed to delve into technologies that were forbidden. He was appointed Fabricator-Genaral of iterium sometime in 681.M41 and soon began to conduct experiments into the banned technologies, this soon brought him to the attention of his superiors who ordered him to stop. but he paid no heed to these demands and infact increased his work. In his goal of creating his own empire he persueded the Fabricator-Generals of 6 other Forge Worlds to unite under his command and secede from the Imperium. Knowing he would not be allowed to go peacefully he set about creating an army to do his bidding, using the power of 7 Forge Worlds he set about creating an army that he believed would be enough to break away, to this end he also used the long standing ties of his world to the vaunted Knights of Guilliman Astartes Chapter and to the Grey Gorgons to convince them that his goals were honest and during the coming war these two Chapters would commit themselves fully to Atilla and his plan much to the ruin of them both. Allied to these formidable forces was the Atilla Legion, an army 100 million strong created from the PDF and Imperial Guard regiments in the Cluster along with tens of millions of poorly trained but very well equiped militia units from the worlds of the Cluster, the Elite Atilla Legion units that were equipped with a lighter type of Power Armour similar to that worn by some Inquisitors as well as with Boltguns. Further strength was added from the massed Skitarii Regiments of the Forge Worlds along with Titans and Knights based there, against virtually any foe this Army would sweep all before them but Atilla knew that the Imperium would commit vast forces to retake these importent worlds but he was set on his path and plunged his worlds into war.

931.M41 The War Begins
The opening actions of the war were not the all out attack that was expected but rather a series of small raids carried out by elite Astartes units against known imperial strongholds, the goal was to cripple the imperium's abilty to react swiftly. With these outposts removed Atilla was able to launch his first major offensive against the holdout forge world of Lycan. lycan was very important as the only stable warp lane into the sector exited at lycan and so the system became the main hub for all outgoing and incoming trade, lycan was also intended to serve as an example of what happens to those who defy atilla.

931.M41 - 939.M41 Seccesionist Advance and Invade Lycan V, Corinth Holds Out
For the next few years the seccesionists advanced and conqued several worlds, but several who refused to join atilla would defy him including corinth who would in a heroic stand that would go down in legend and lycan itself, using a series of diversionary attacks atilla was able to move his army into position above the world and with a single word the massed fleet opened fire and soon the worlds defences were neutralised for very little loss to the seccesionists, the fleet led by the battle barges of the astartes chapters soon directed their fire against the ground defences in order to allow the transports an unhinderd appourch to the landing grounds with the astartes striking at the command centres and major defence positions. the ground assault soon follewed and despite taking casulaities the atilla legion was able to gain several footholds and the skitarii, knights and titans of lycan were forced back into prepared defence positions on the northan continant and bunkerad down to wait for the reinforcemant that were cetain to come. reinforcement was not soon in arriving and it took 2 years for the first imperial troops to arrive. the first to arrive was the great company of the space wolf lord Erik Olafsson, he arrived to find a world under siege and began immediatly to asses the situation, thanks to the few transmissions that managed to get through the tratiors communications blockade he learned that over the past 2 years the atilla legion had launched repeated attacks against the skitarii of lycan but had not been able to break the defensive lines and the war had become a stalemate with neither side moving much from thier own lines. the space wolves wanted to launch an immediate attack to break the siege but were forced to wait due the strength of the tratior navy but they would not have to wait long as the entire ash scorpions chapter  and massive navy and guard forces were mear days away.

936.M41 Space Wolves recalled to Fenris, Corvo named Supreme Commander
with the power of an entire chapter, a great company and the imperial navy the attack began, the tratior forces put a significant fight but were unable to cope the righteos fury of the astartes and the they were able to break through the blockade and launched the attack against the rear of the tratiors in their siege lines. the fighting was feirce but over a number of days 6 full astartes companys and 30 guard regiments were landed and they soon surrounded the tratiors. in space the fighting was just as brutal but the tratiors were forced to disengage from the fighting and fled back to the warp. despite the sucesses the imperials did not have it all their own way, 30 vessels were cripelled or destroyed and thousends of guardsmen were killed but the most telling casuality was the wolf lord Erik Olafsson who was killed leading a boarding attack against the knights of gulliman flagship konors honour, with the failed attack the space wolves disengaged and informed the ash scorpions that honour dictated that they return to fenris to elect a new wolf lord. in most circumstances the loss of a great company would be disastorous but more astartes units had arrived including the chapters of the skull reapers and Corvus Legion and companys from the halo dragons and imperial fists. An enclave of chapter masters soon convened and elected Commander Corvo of the Ash Scorpions the supreme commander of all imperial forces.

936.M41 - 939.M41    Increasing Numbers of Astartes join the War
over the years following the attack on lycan significant numbers of astartes flock to the war

937.M41 Corvo Launches Trident Plan, Battle of Sigma, Chaos Warships Encountered in Centurion Sector
While the fighting on lycan raged on corvo was preparing the next phase of the war. the road to iterium and atilla, using the lycan system as a springboard the imprial forces were to attack in three seperate wings, the left wing would move through the extal and dorns light systems on on towards the forge world of undine but would first have to destroy the tratoir forces around sigma. this would not be easy and corvo dispactched significant forces including elemants from 6 astartes chapters and led by Captain Pardis of the halo dragons 2nd company captain. the fighting was especially brutal as atilla had turned sigma into a fortress and forced the worlds entire population to manufacture arms and other weapons of war. the battle of sigma marked the first occasion of human wave attacks as the civillion populations were used as cannon fodder to deplete the imperials ammunition and sap their morale but the victory was soon achieved and sigma was marked as secured. choas warships were also noted in the centurion sector for the first time and the librarians of the the chapters were warning of major distubances in the warp.

939.M41 Lycan V Liberated
this year was a major turning point as lycan was finally liberated after 6 years and millions of casualities.

939.M41 Seccessionist Forces forced onto Defence
with lycan liberated and sigma netralised corvo was free to implement the next stage of his plan, 2 more army groups would launch their attacks, the centre led by corvo was to be directed at lytonus while the right wing would stike towards granitan. the fighting would be intense as hundreds of worlds lay between the imperial forces and thier ultimate goal. iterium

940.M41 Flesh Rippers Arrive and Destroy Knights of Guilliman, Massacare at Albion
With the war now 9 years old the number of astartes and imperial forces arriving were growing mounthly and this year marked the arrival of a force that would go down in infamy and would change the war in an unexpected way. during 940.M41 as the war finally began to turn in favour of Imperial forces Lord Commander Corvo (Chapter Master of the Ash Scorpions) was informed by his Chief Librarian that a significant force was making their way through the Warp and break into realspace behind Corvo's main force. Fearing that it was secessionists he removed his entire chapter from the fighting against the Knights of Guilliman and prepared for arrival of this unknown force, what emerged from the warp was not what Corvo had expected. A full Astartes Chapter had arrived, this new Chapter immediately began broadcasting that they were friendly and even lowered their shields to show peaceful intent, they offered a parley on the nearby world. Leading a single squad Corvo met with these unknowns and through he was wary of them his Chief Librarian stated that he believed that they were not followers of the Dark Gods but nor could he certain they were followers of the Imperium. The unknown Astartes introduced themselves as the Flesh Rippers, a name Corvo dimly recalled hearing before, and their leader named himself Captain Moloch of the 10th Company. He told Corvo that the Lord Reaper would only talk through him. Over the course of several hours the two parties conversed until finally Corvo was convinced that the Flesh Rippers were true to the Emperor at least, and so, with some reservations he allowed them into his order of battle. Following this meeting, Lord Reaper Uric Draf leads the entire Chapter against the Knights of Guilliman on their Homeworld of Jorvick.

The knights of guilliman were a proud and storied chapter that though no fault of their own had found themselves fighting against the imperium. The Reason behind this decision dates a thousand years back when the Knights of Guilliman fought to defend the Iterium System from the foul Eldar and at the height of the war they, and the Forge Worlds Fabricator-Genaral, swore an oath to help each other when needed and with their homeworld close to the Centurion Cluster their choice was clear and they entered the war on the side of the Secessionists. They were however an unreliable ally as their loyalty to the Emperor and the Imperium warred with their sense of honour and the need to honour their oath. They never operated under the command of of Fabricator-Genaral Atilla and had few of his units in their ranks and tried to end any engagement with words rather than bolter and any foe that was beaten was granted a passage to rejoin the Imperial Forces. By 940.M41 they had however grown tired of the war and desired to end its involvement and they began to believe that they had been deceived and that Fabricator-Genaral Atilla, the Grey Gorgons and the other Fabricator-Genaral had been corrupted and turned to Chaos, but they would not get the chance to end it peacefully. Recalling the entire chapter and those units of the Atilla Legion that also wanted to end the war back to Jorvick and they began to prepare to surrender and submit themselves to the Emperors Judgement when an Imperial Force arrived in orbit led by the Flesh Rippers, any attempt to talk was ended as the Flesh Rippers' fleet opened fire on the Knights fleet and soon a great battle raged in orbit as the secessionists fought back. With the help of the Imperial Navy who kept the Knights ships and orbital defences busy, the Flesh Rippers launched their entire chapter into a massive assault against the world of Jorvick. Hundreds of drop pods and gunships roared through the atmosphere crashing into the ground outside the walls of the Fortess of Konor. Led by their Chapter Master, the Flesh Rippers erupted from their pods and Thunderhawks and without heeding injury or loss they hurled themselves at the walls and the Knights of Guilliman leapt to meet them matching the Flesh Rippers pure fury with pure determination. For nine blood drenched hours the two chapters fought in the most vicious fighting imaginable until finally a ramp of corpses led up to a single breach in the wall, and the Astartes of the Flesh Rippers chapter plunged in. Filled with rage they were merciless. By the time the Salamanders, who were supposed to support the Flesh Rippers, arrived, the battle was all but over. The inside of the fortress was filled with the dismembered and mangled corpses of the defenders, for not one soul had been spared from the fury of the Flesh Rippers. It was an absolute slaughter, the fortress having been transformed into an abattoir of Astartes.

The knights of guilliman were all but destroyed and corvo, while pleased that such a powerful force had been eliminated was disgusted by the Flesh Rippers, he called a meeting with the other chapter masters to discuss what was to be done about them. the agreemant was that they needed to be rained in and corvo dispatched the Corvus Legion, skull reapers and charnel brethran to watch over them and lead the right wing in their campaign against granitan, he hoped that the presence of 3 other chapter masters and their chapters would be enough to make sure that the Flesh Rippers were restrained in the future. in this corvo was mistaken as the next attack on albion was to descend to new depths.

Abion was an agri world located not far from the jorvick system, 10 regiments of atilla legion had been stationed there and Shadow Lord Rhargrimm (Chapter Master of the Corvus Legion) was determined to take it and dispatched the Flesh Rippers and charnel brethren along with 10 regiments of imperial guard. the plan was simple, the guard would land first and engage the atilla legion while the 2 astartes chapters would drop right into the heart of the defences and destroy from the inside. at first the plan proceeded smoothly but guard commanders soon realised something was wrong when the atilla legion began pouring towards the imperial line. the guard colonal tayle saw in the faces of the soldiers absolute terror and they displayed no fear of the massed guns of the imperial guard, only a desire get away from whatever was attacking them, the colonal soon saw what it was, The Flesh Rippers and Charnel Brethren, apparently driven mad by some kind of battle frenzy, crashed into the atillas legion's rear ranks just as the first soldiers reached the guards lines. The crazed Marines fell upon the atilla legion in an orgy of blood letting. Many Marines removed their helmets and, eschewing the use of pistols and other ranged weapons, set about the soldiers with chainsword, chainaxe and knife and tooth. colonal tayle witnessed in mute horror, Marines ripping out the throats of men with their bared teeth. The raw fury and love of carnage he saw in their faces as they literally tore the enemy apart made him shudder in fear. The tratior forces were annihilated within minuets of the Marines' attack, but the small number of the enemy were simply not enough for the Flesh Rippers and Charnel Brethren who by now seemed to have been driven into a fever pitch of absolute blood lust. With no more tratoir's for them to butcher, they scrambled over the breastworks of the imperial guard and smashed into thier line. Properly driven into a true battle frenzy now, the Flesh Rippers and Charnel Brethren performed acts of the most debauched nature in the name of violence. Every one they found fell beneath their blades, Even though they were allies none were spared the Marines crazed attack. Colonal Tayle and several companys were able to make it back to their drop ships and soon fled to the safety of their ships leaving behind terrified and helpless civillians to face these crazed marines alone.Colonal Tayle later reported that he had personally witnessed cannibalistic acts committed by the frenzied Marines. Colonal Tayle was able to report back to his commanders and Lord Commander Corvo all that had happened at albion, the inquisition was informed and the matter would have to be handled but it must wait as other events had forced corvos hand. Choas forces had been conclusivly identified and were increasing in number at each passing week. the matter of the Flesh Rippers and Charnel Brethren would have to wait until the war was over.

942.M41 Imperial Left Wing Halted at Undine VIII
11 years had passed since the outbreak of war and the situation was stable, dozens of world's had fallen to the imperials but the massive forge world of undine was the next target and this would not be easy to capture, undine was the 3rd largest forge world in the sector and had a standing army some 8 million strong and it was defended by a ring of orbital stations and a significant naval presence, massed defence silos and ground lasers surronded the manufacturing hubs, most significantly an entire titan legion called the planet home and the nearby Knight World of Undine VI would also needed to be taken. Lady Marshall Kasteen was fully aware that atilla would defend these important world's with all avaliable forces and so she dispatched an entire guard army group, some 3 million stong and elements from 3 titan legions and numerous knights to take it as swiftley as possible and placed under the command of lord Genaral Nayle. Undine VI was taken swiftly as all but 3 of the worlds Knights had been dispatched to defend Undine VIII leaving it vunerable to a swift assault from over 30 Knights who broke the defences before moving on the main target of Undine VIII  but thanks to a series of mistakes and general imcompatance from Nayle even the massive force that was assembled was unable to capture the world and like lycan the fighting descended into a stalemate that would last 4 years.

942.M41 Flesh Rippers, Charnel Brethren, Skull Reapers and Corvus Legion Retire from War
for reasons that have yet to be determined these 4 chapters retired from the fighting immediatley.

944.M41 Liberation of Corinth, Largest Naval Action of War, Choas Revealed
while the left wing was fighting at undine the center was moving swiftley forward and liberated the major hub of Corinth which thanks to corinthian dragoons had held out for 12 years. at the same time the largest naval action of the war took place at oberon as imperial forces clashed with the traitor in a battle that numbered close to 200 vessels, the imperial navy emerged victorious but badly mauled in the fighting and 47 ships were lost.it was during this year that chaos was susspected to be behind the war, thanks to an imperial assassin that broaght the news back from a failed attempt on atilla's life.

945.M41 109th Siege Army Destroyed at Radium I
whilst the fighting at undine was underway Lord General nayle commander of the 31st Siege Army Group attempted to end the stalemate by launching an attack against the nearby forge world of radium and hoping to draw away the stream of reinformants that atilla was sending to undine.by attacking radium nayle also hoped to divert attention from his failing at undine. the 109th army that was designated to capture the world was made up of new recriuts and was badly underequiped to fight on radium which as its name suggests was a barren wasteland covered in noxious fumes and high levals of radiation, the legacy of thousends of years of industrilization, anyone not wearing protective gear would be killed within hours. nayle did not care that his troops would be  killed in their thousends and ordered the attack, nayle also ignored the reports that massive chaos forces were present on radium, the result was as expected, those few troops not kiled by the massed ranks of choas cultists and traitor marines were killed by radiation. Nayle would pay the price for his stupidaty and was arrested by the senior commissar of Lady Marshal Kasteen and executed by lord - Inquisitor Diemos and Lord General Krag appointed in his place. he immediatly set about rectifing his preddecessors mistakes and dispatched the 3rd and 10th Siege army's along with skitarri from lycan to take radium, these 2 army's and thier allies were battle hardened vetrans and with the guard formations equipped with protective suits they were finally able to fight on equal terms with worlds defenders. the centre wing at this time were able to capture lytonus and continued their advance.

945.M41 Largest Tank Battle of War at Radium I, Capture of Radium I, First Encounter with Bringers of Change
the war for radium would be swift but brutal as massed tank regiments fought over the barren ground, eventually though sheer will the imperial forces pushed chaos forces back and captured the world.meanwhile at kalen the novamarines woud encounter for the first time the bringers of change and confirm once and for all that choas had corrupted atilla.

946.M41  Iron Snakes Suffer Heavy Casualties on Hive World Likal III, Ash Scorpions Divert to Undine VIII, Capture of Undine VIII, Imperial Navy Task Force Destroyed at Obtine V
in 946 the war would take a major turn as fighting continued acrross the sector. at likal the iron snakes suffer heavy casulaties fighting through the hives of likal against tratoir marines. meanwhile lord commander corvo, impatient to finish things at undine moves his entire chapter to the world and in heavy fighting finally captured the world. admiral priett,left in command of the centre would attempt to move swiftley and led a task force to obtine but was met with massed fire from numerous tratoir vessels. admiral priett and over 100 thousend crew were killed. lord commander corvo ordered elements from 4 chapters and 4 entire fleets to obtine and the soon the imperials were able to land ground forces and soon fighting was happining across the surface.

947.M41 Titans Clash at Obtine V, Obtine V Destroyed by Exterminatus
unable to break the traitor lines the imperials deployed titans and knights and pushed back the tartioirs enough to shell the main manufactorum. choas forces responded by unleashing plague of virus and plague zombies, determing that the world was lost corvo ordered a retreat from the surface and destroyed it by exterminatus.

948.M41 Setback at Granitan, Imperial Left Wing Disbanded and Sent to Granitan, Astartes Forces diverted to Granitan, Massive Deamon Incursion at Likal VI
the imperial right wing continued their advance towards granitan but faced heavier pressure form choas forces and were increasingly forced to slow their progress but nevertheless managed to force their way though and soon the twin forge world of granitan were under siege but large choas forces counterattacked and in a series of battle forced the imperial navy out of the system leaving the imperial ground forces vunerable and witout support. lord commander corvo ordered all availiable astartes forces to granitan, he also disbaned the left wing and moved them to granitan. his center incresed their advance  and moved towrds granitan, after several months of fighting the imperial forces regained control of the system and were able to resupply the guard units on the ground but the battle would take a further 4 years before the world was declared secure. meanwhile at Likal the grey knights were fighting the largest deamon invasion of the war, emerging victorois only at great cost.

952.M41 Final Assault on Iterium System
once granitan had been taken the imperial began preperatin for the final attack on iterium. corvo knew that he face not only the choas gods mortal servants but also massive numbers of deamons. when the imperial force finally appeared over iterium the fighting took on a whole other apperance and it would take two years for the world to be subjecated. during the fighting the deamon prince charon manifested. atilla was able to escape along with the tratoir marines but millons of cultists were left behind to be destroyed.

954.M41 The War is Bought to a Close
after 23 years the war was finally over but a heavy price had been paid, billions were dead and the sector was now a barren wastleand and the 7 forge worlds that had been at the heart of the war had been left completly unusable. the imperial forces withdrew  and were sent to other warzones leaving the sector undefended. ork, elder and other xenos moved in and carved out territoties of their own and from the world of pythonus a snake like reptillian race began to forge themselves an empire and from the nearby Koronus Expanse Rak'Gol Marauders have arrived forcing the inquisition to despatch a deathwatch task force  to deal with this new threat and fight yet another war for control of the centurion sector.

Order of Battle Centurion War (931.M41 to 954.M41)
==== Imperium of Man==== Senior Commanders Lord Commander Corvo - Chapter Master of Ash Scorpions, overall commander Master Zahariel - Lions Malevolent 3rd Company Captain Master Anaziel - Dark Angels 4th Company Captain Captain  Adrax Agatone - Salamanders 3rd Company Captain Captain Mordacai - Novamarines 4th Company Captain Lord Reaper Uric Draf - Chapter Master of Flesh Rippers Reaper Captain  Moloch - Flesh Rippers 10th Company Captain Lord Michaelus - Chapter Master of Charnel Brethren Iron Lord Severon - Chapter Master of Skull Reapers Shadow Lord Rhargrimm - Chapter Master of Corvus Legion Wolf Lord Erik Olafsson - Space Wolves Wolf Lord Marshal Titan - Black Templars Crusade Marshal Captain Pardis - Halo Dragons 2nd Company Captain Cannoness Anastasia - Cannoness of the Order of the Emperor Resplendant Magos Dominus Balthasar - Fabricator General of Lycan Marchioness Elyssa Van Lycan - Lady of the Knight World Lycan VIII Princeps Alyssa Van Lycan - Senior Princeps of Legio Canis Lady Marshal Kasteen - Supreme Commander Astra Militarum Lord General Nayle - Commander of 31st Siege Army Group(Executed 945.M41) Lord General Krag - Commander of 31st Siege Army Group Lord General Vambrac - Commander of 110th Siege Army Group Lord General Imhorst - Commander of 203rd Siege Army Group Lord General Pial - Commander 17th Assault Army Group Lord General Ambelane - Commander 18th Assault Army Group Lord General Sturmm - Commander 94th Assault Army Group Lord General Jurgen - Commander 100th Assault Army Group Lord Admiral Pellas - Command of Imperial Navy Forces

Adeptus Astartes Ash Scorpions - Entire Chapter Novamarines - 2 Company's Lions Malevolent - 4 Company's Dark Angels - 1 Company (948.M41 to 954.M41) Salamanders - 1 Company Flesh Rippers - Entire Chapter (940.M41 to 942.M41) Griffon Lords - 2 Company's Imperial Fists - 1 Company Black Templars - 1 Crusade Space Wolves - 1 Great Company (931.M41 to 936.M41) Emperors Wolves - 1 Company Iron Snakes - 6 Company's (940.M41 to 954.M41) Charnel Brethren - Entire Chapter (940.M41 to 942.M41) Corvus Legion - Entire Chapter (936.M41 to 942.M41) Skull Reapers - Entire Chapter (936.M41 to 942.M41) Halo Dragons - 7 Companys (934.M41 to 954.M41) Red Hunters - 3 Companys (935.M41 to 954.M41) Grey Knights - Unknown

Imperial Guard 31st, 110th, 203rd Siege Army Groups 17th, 18th, 94th, 100th Assault Army Groups with the following Regiments Corinthian Dragoons - 1 Regiment Cadian Shock Troops - 139 Regiments Death Korps of Krieg - 51 Regiments Mordian Iron Guard - 17 Regiments Praetorian Guard - 7 Regiments Vresh Grenadiers - 9 Regiments Faeburn Vanquishers - 2 Regiments Elysian Drop Troops - 1 Regiment Tempestus Scions - 2 Regiments Athonian Tunnel Rats - 6 Regiments Vostroyan Firstborn - 3 Regiments Miasman Redcowls - 3 Regiments Valhallan Ice Warriors - 27 Regiments Hundreds of other Regiments whose names have not been recorded Unknown Number of Penal Regiments

Sisters of Battle Order of the Emperor Resplendant  - 11 Companys

Imperial Navy + Astartes Fleet Assets Battlefleet Centurion 11 Battleship's 19 Battlecruiser's 23 Front-Line Cruiser Squadron 51 Light Cruiser Squadrons 78 Escort Squadrons 8 Battle Barges (Ash Scopions 1, Flesh Rippers 1, Charnel Brethren 1, Halo Dragons 1, Black Templars 1, Skull Reapers 2, Corvus Legion 1) 47 Strike Cruisers 86 Escort's 1 Ark Mechanicus Battleship (Lycan V)

Adeptus Mechanicus Forces Forge World Lycan V (Skitarii - 10 Regiments, House Lycan based on Lycan VIII - 18 Knights, Legio Canis - Entire Legion) Legio Invigilata - 3 Maniples Legio Ignatum - Demi  Legion House Terryn - 38 Knights

Forces of the Inquisition Lord-Inquisitor Deimos - Ordo Hereticus Senior Inquisitoral Representive Inquisitor Vale - Ordo Malleus Inquisitorial Task Forces - CLASSIFIED Grey Knights - CLASSIFIED

Officio Assassinorum Agents - CLASSIFIED

Templars Psykologis Disruption Squads - 7 Augur Teams - 1

Secessionist Forces
Senior Commanders Fabricator-Genaral Atilla - Senior Magos in charge of the 7 Forge Worlds of the Centurion Cluster - secretly a devotee of Chaos Lord Marius Gage Kruger - Chapter Master of the Knights of Guilliman Lord General Ligrus - Commander of Atilla Legion High King Litanus tar Iterium - Lord of the Knight World Iterium III Admiral Apolynia - Imperal Navy Secessionist, commanded fleet assets

Chaos Commanders (after 940.M41) Charon - Deamon Prince of Tzeentch Lord Thanatos - Sorceror Lord devoted to Tzeentch and Charon, Commander of the Bringers of Change Lord Lucius - Chaos Lord of the the Bringers of Change Lord Severus - Chaos Lord of the Night Lords 38th Company Lord Amillus - Chaos Lord of the Alpha Legion 20th Company

Secessionist Adeptus Astartes Chapters (To 940.M41) Knights of Guilliman - Entire Chapter Grey Gorgons - Entire Chapter (Became Bringers of Change)

Chaos Warbands Bringers of Change (Grey Gorgons)- Entire Force Oracles of Change - Entire Force Night Lords 38th Company - Unknown Force Alpha Legion 20th Company - Unknown Force The Purge - Entire Force Skyrar's Dark Wolves - Unknown Forces Flickering Blades - Unknown Forces Angels of Ecstasy - Entire Force The Flawless Host - Unknown Force Swords of Khargoth - 30 Chaos Marines Extinction Angels - Entire Force Lords of Decay - Entire Force Warriors of Mayhem - Entire Force Gladiator Group 138 - Unknown Forces Angron's Chosen - Unknown Forces World Eaters - Unknown Forces Death Guard - Unknown Forces Word Bearers - Unconfirmed Sightings Iron Warriors - 2 Grand Companies

Chaos Cultists and Mutants + Daemon Forces (Encountered after 941.M41) Estimated 100 Million + of Cultists, Mutants and Daemons

Secessionist  Imperial Navy + Astartes Fleet Assets + Chaos Fleet Assets (Chaos Forces after 937.M41) 9 Battleship's 19 Front-Line Cruiser Squadron 41 Light Cruiser Squadrons 56 Escort Squadrons 3 Battle Barges (To 940.M41) 9 Strike Cruisers (To 940.M41) 23 Escorts (To 940.M41) Unknown number of Chaos Vessels (after 937.M41)

Secessionist Adeptus Mechanicus Forces Forge World Iterium VI  (Skitarii - 17 Regiments, House Iterium based on Iterium III 59 Knights, Legio Draxon) Forge World's Granitan IV + Granitan V (Skitarii - 17 Regiments, House Granitan Based on Granitan VI 37 Knights, Legio Osedon) Undine VIII (Skitarii - 9 Regiments, House Undine based on Undine VI 37 Knights, Legio Ostrom) Forge World Lytonus III (Skitarii - 4 Regiments) Forge World Locan V (Skitarii - 6 Regiments) Forge World Radium I (Skitarii - 5 Regiments) 1 Ark Mechanicus Battleship (Iterium VI) Legio Audax- Demi-Legion (after 940.M41) Traitor Knights Traitor Titans

Auxiliaries Atilla Legion - Estimated at 100 Million+ including secessionist Imperial Guard Regiments

Outcome
Attacker    Imperium of Man Defender    Seccessionist Forces, Chaos Forces Attacking Commander Lord Commander Corvo(Ash Scorpions) Defending Commander     Fabricator-General Atilla, Lord Thanatos(Bringers of Change) Date    931.M41 to 954.M41 Scale    Crusade Theatre     Centurion Sector, Segmentum Obscurus

Strength (Attackers) Elements from 16 Astartes Chapters, 2 Imperial Guard Army Groups, Imperial Navy, Inquisition, Adeptus Mechanicus.

Strength (Defenders)    2 Astartes Chapters, Atilla Legion, Seccessionist Imperial Guard, Navy Forces, Seccessionist Adeptus Mechanicus Forces, 13 Chaos Space Marine Warbands, Chaos Cults, Mutants.

Casualties (Attackers)    Significant: Imperial Guard, Est 140 Million+ Casualties + 9 Billion+ Civillians: Imperial Navy, 7 Battleships, 138 Cruisers and 171 Escorts destroyed: Adeptus Mechanicus, Est 40,000 Casualties, 17 Titans, 94 Knights: Adeptus Astartes, Est 1,000+ Astartes Casualties, 8 Strike Cruisers, 27 Escorts

Casualties (Defenders)    Significant: Seccessionist Forces, Est 30 Billion+ inc Civillian Casualties, Heavy Naval Losses. Chaos Forces, Est Millions Chaos Cultist Casualties, 1,000+ Chaos Space Marine Casualties.

Status    Pyrrhic Imperial Victory

Outcome    Seccessonist and Chaos Forces Destroyed but Many Escaped into Warp, Imperial Astartes Chapters Badly Depleted, Centurion Sector Largely Rendered Uninhabitable.

Current History
During the campaign it was discovered that a significant number of the human worlds within the Drameara Expanse  had reforged themselves into their own empire, calling themselves the Akillian Empire they initiated a war with the snake like Raknine, most disturbingly the Inquisition have also located signs of a number of Necron Tombworlds within the Drameara Expanse, designated the Herakleodraco Dynasty, 3 worlds have been confirmed to have awaken with an unknown number still sleeping forcing the newly returned Primarch Roboute Guilliman to order a campaign to claim these worlds for the Imperium, a brutal war that is ongoing and has been waged for over 100 years. The Herakleodraco Dynasty has also drawn the attention of the Adeptus Mechanicus, dispatching numerous legions to the expanse the Mechanicus forces have become a major participent in the war, led by the former Fabricator-General of Lycan Magos Dominus Balthasar the Mechanicus would give anything to get thier hands on this massive source of tecnology.