Smoke & Blind Grenades One use only.
Blind/smoke grenades are used in the Shooting phase instead of the unit firing any weapons. Mark the unit as using its blind/smoke grenades by placing cotton wool around them. A unit cannot assault on the same turn it uses blind/smoke grenades. The blind/smoke screen lasts until the start of the player's next turn and until then the unit counts as in cover with a 5+ cover save. Because they count as being in cover, models in the unit will also strike first if assaulting, unless the enemy is armed with something like frag grenades, or has an ability that allows them to always strike first.