TANK HUNTERS

No armour is safe from the guns of the IV Legion.
Use this Stratagem in your Shooting phase or the
Fight phase, when you choose an Iron Warriors
unit from your army (excluding Chaos Cultists)
to shoot or fight with. Select one enemy Vehicle
unit. Until the end of that phase, when resolving
an attack made by a model in that Iron Warriors
unit against the selected unit, you can re-roll the
wound roll.