Why masks :))

Mask worn on the soldier's head to frighten the enemy and suppress his morale.
Judge for yourself: the enemy is sitting in a trench, tea prevents stomach, no one touches.
Suddenly the top hangs trunk, there are two glass eyes and muffled voice says: "Give to smoke."
Naturally, that the enemy throws hot tea on your pants, and this, believe me, very painful. After this incident, the enemy for a long time still can not get over it, and our soldiers in a gas mask in the meantime climbs to another enemy trenches.
Thus, one fighter can for half an hour to disable a small anti-tank units.
And two soldiers - a whole regiment, due to the double effect of surprise: one says "give a cigarette", another says - "carefully, do not spill the tea."