Adaptive Defence

Each time an Adeptus Astartes model from your army makes an attack, if that model’s unit is within a terrain feature, re‑roll a Hit roll of 1 and re‑roll a Wound roll of 1. 

Adeptus Astartes units from your army gain the Entrenched keyword while all of the following are true: 

• That unit is within a terrain feature.
• That unit was not set up on the battlefield this turn.
• No model in that unit has moved more than 3” this turn.