Suppression Fire

When: Your Shooting Phase
Target: One Astra Militarum Infantry unit from
your army that has not been selected to shoot
this phase, and one enemy unit (excluding
Monsters or Vehicles).
Effect: If your Astra Militarum unit scores at
least one hit against that enemy unit this phase,
until the end of your opponent's next turn, each
time a model in that unit makes an attack,
subtract 1 from the Hit roll.