For 10000 years, the Chaos Space Marines have waged near-steady battle at the galaxy that solid them out. Genetically augmented post-people clad in baroque energy armour, those historical warriors are festooned with the war scars and trophies in their treachery, marked with the aid of using the advantages of foul entities from past reality. From the veteran murderers of Renegade Chapters to the Traitor Legions of bad legend, the Heretic Astartes combat for vengeance, for glory, for the sheer insanity of war.
Led with the aid of using the champions of Chaos – from towering Daemon Princes to malevolent Sorcerers – squads of veteran Legionaries combat along growling warfare tanks, surrounded with the aid of using teeming mobs of cultists and mutants determined to affect their darkish masters. Whether mortal, machine, or Marine, all are worth vessels to be possessed frame and soul with the aid of using daemons of the warp, bringing doom to their foes as gargoyle-mouthed Daemon Engines or hideous and lethal Possessed. Such armies are the deadliest risk to the Imperium of Mankind, their Long War born from the bitterest of hatreds.