Microsoft Close Combat - Manual (Page 121)

120 Close Combat
Bunkers
Bunkers are structures built by the military specifically for
defensive purposes.
Interior (Floor) Height: Flat
Concealment: Fair
Visual hindrance: Fair
Protection from aimed fire: Poor
Protection from HE shells: Poor
Wall Height: Tall
Concealment: Excellent
Visual hindrance: Blocks view
Protection from aimed fire: Excellent
Protection from HE shells: Poor