Vraks is a bleak armory world that became the site of one of the most grueling sieges in the Imperium's recent history. Once a secure depot where the Astra Militarum stockpiled weapons, munitions, and war materiel on a colossal scale, the planet was seized by a renegade cardinal and his followers, who turned its own vast arsenals against the Imperium that had built them.
The response was a siege of staggering duration and cost. For seventeen years, waves of Imperial Guardsmen, Death Korps siege regiments, and eventually the Adeptus Astartes hurled themselves against the fortress-citadel of the traitors, grinding forward through minefields, trench networks, and fortified lines in a campaign that consumed millions of lives. What began as a rebellion slowly festered into something far worse.
As the defenders grew desperate, they gave themselves over to the Ruinous Powers, and the forces of Chaos manifested openly upon the world, drawing daemons and heretic Astartes into the fighting. By the time the citadel finally fell, Vraks had been reduced to a corpse-choked ruin, its soil poisoned and its arsenals spent. The world stands as a grim monument to the cost of the Imperium's wars and to how swiftly rebellion can curdle into outright damnation.