The Doom Legion is a Space Marine Chapter, of Ultramarines descent, that had a majority of their Chapter become corrupted into the Chaos Space Marine warband known as the Vectors of Pox, during the Abyssal Crusade.
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The Doom Legion was responsible for maintenance and garrison of the Faithful's Deliverance, the pre-Heresy star fortress that overlooks the notorious Elusian Maze asteroid fields. Few other Space Marine Chapters could boast space-borne firepower of this magnitude[2a]. Though the Doom Legion had been all but forgotten for so long, left in that distant outpost, fighting endless wars against the denizens of the accursed sector. The Chapter's homeworld is the artificial planet of Elusia Prime.[2b]
The Doom Legion was one of the thirty Chapters sentenced to the Abyssal Crusade. Because of their duty of watching over the Elusian Maze, six companies took part in the Crusade, instead of the entire Chapter, and they were corrupted into the Vectors of Pox warband.
Despite the corruption of the majority of their Chapter, four Companies remained loyal; including the Chapter Master at that time, Lord Konstantos. Currently, the Doom Legion have appeared to have rebuilt their Chapter, as of 998.M41 the Doom Legion 4th Company is known to be operating in the Ultima Segmentum, quelling an uprising on Neo Khartoum.[2a]
During the 13th Black Crusade, the Doom Legion and Fire Lords came to the aid of the 4th Cadian army on the besieged Fortress World of Kasr Sonnen. Despite this, Imperial projections showed the defenders would be overwhelmed by the attacking Alpha Legion forces in 2-3 days without further reinforcements.
- Loyal Space Marine Chapters (List)
- Space Marine Forces (List)
- Chaos Space Marine Legions and Warbands (List)
- 1: Warhammer 40,000 5th Edition Rulebook, p. 132
- 2: Codex: Space Marines (5th Edition)
- 3: Codex: Chaos Space Marines (6th Edition), p. 19
- 4: Judgement (Short Story), Mark Latham, pp. 1–3
- 5: Gathering Storm: Fall of Cadia, pg. 63