The upcoming Codex: Space Marines brings major updates to Blood Angels and Dark Angels detachments in Warhammer 40,000. Blood Angels' Angelic Inheritors detachment now focuses on re-rolling 1s for Hit and Wound rolls with new stratagems like Measured Strategist, while Dark Angels' Wrath of the Rock detachment returns with revised enhancements and stratagems including In Sacrifice, Victory and Knights of Iron.