A series of publications, Warhammer Army Book or Codex (Warhammer 40,000), that contain the rules and story for the armies in the game
Warhammer Fantasy (setting) | Warhammer Fantasy | Warhammer 40,000 | Warhammer Fantasy Battle | Warhammer | General of the Armies | Warhammer Fantasy Roleplay | Warhammer Online: Age of Reckoning | Warhammer Army Book | The Armies of the Night | Sisters of Battle (Warhammer 40,000) | Orc (Warhammer) | Codex (Warhammer 40,000) | Chaos (Warhammer) | Araby (Warhammer) |