Models inside buildings can shoot missiles from arrow-slits, windows or doors. Up to two models may shoot from each opening. Models on flat roofs, parapets, balconies, or such-like can also shoot as normal. Troops in buildings do not all have to shoot at the same target, instead they may shoot as individuals, shooting from a particular window at targets they can see.

Models which have shot missiles from windows can be seen and may be shot at by enemy in their turn. There will be a -2 to hit modifier, as models inside buildings have the benefit of being behind the hard cover of walls.