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<br clear=all>'''Codex: Grey Knights''' is an expansion [[Codex]]. It was released in 2014, for the [[Warhammer 40,000 7th Edition Rulebook|7th Edition]] of [[Warhammer 40,000]].{{Army book

The [[Grey Knights]] were forged in the dark days of the [[Horus Heresy]] - — their sacred duty to act as the [[Emperor]]'s ultimate sanction against the armies of the [[Immaterium]]. Peerless [[psyker]]s and fearsome warriors, the Grey Knights [[Space Marine Chapter]] are master [[Daemon]] hunters and often Humanity's final line of defence against the powers of [[Chaos]]. It is an unending war against an immortal foe, however the Grey Knights are an army like no other, and they fearlessly face their foes with ready blades and blazing [[storm bolter]]s.