Combat Docrines Several special rules allow units or Formations to enact one or more of the following Combat Doctrines. Whenever a rule allows this, it will note which units are affected and how many times per game the Doctrine(s) can be enacted. These are cumulative. You can enact a single available Combat Doctrine at the start of each of your turns.
Tactical: Affected models can re-roll To Hit rolls of 1 in the Shooting and Assault phases of this turn. Affected models in Tactical Squads, including any affected models with the Independent Character special rule that have joined those squads, can instead re-roll all failed To Hit rolls in the Shooting and Assault phases of this turn.
Assault: Affected models can re-roll To Hit rolls of 1 in the Assault phase of this turn. Affected models in Assault Squads, Bike Squads, Attack Bike Squads, and Centurion Assault Squads, including any affected models with the Independent Character special rule that have joined those squads, can instead re-roll all failed To Hit rolls in the Assault phase of this turn.
Devastator: Affected models can re-roll To Hit rolls of 1 in the Shooting phase of this turn. Affected models in Devestator Squads and Centurion Devastator Squads, including any affected models with the Independent Character special rule that have joined those squads, can instead re-roll all failed To Hit rolls in the Shooting phase of this turn.
Scions of Guilliman If your army contains any Ultramarines units, you can choose to enact the Devastator Doctrine, Assault Doctrine, and Tactical Doctrine once each per game. When one of these Combat Doctrines is enacted, all Ultramarines models in your army are affected.
