Traitor Legions: The term 'Traitor Legions' refers to those of the original First Founding Legions who followed the Warmaster Horus and fought with the loyal forces of the Imperium in an effort to overthrow the Emperor during the Horus Heresy. It is generally thought to cover those Legions who turned to Chaos; although the exact status of some the Traitor Legions is open to debate.
The Traitor Legions are:
The Alpha Legion
The Black Legion
The Death Guard
The Emperor's Children
The Iron Warriors
The Night Lords
The Thousand Sons
The Word Bearers
The World Eaters
Source: Codex: Space Marines, 3rd Edition by various, Codex: Chaos, 2nd Edition by various, Codex: Chaos Space Marines, 3rd Edition by various, Codex: Armageddon, 3rd Edition by various, Codex: Eye of Terror, 4th Edition by various, Codex: Chaos Space Marines, 4th Edition by various, Rogue Trader by various
Submitter: Simguinus
Hive World Terra