Here you can see the protective measures of a Bison battery. The chains are intended to set of the fuzes of HEAT shells, a method already used in WWII. The gun itself is mounted in a turret made of composite armour. The embrasure is covered with reactive armour (ERA) blocks, actually a sandwich made of a block of explosives between two metal plates. The tube that creates a water vapor that has to deflect thee laser beams of laser-guided weapons. Unlike other Swiss fortifications the Bison batteries have hardly no camouflage.