The trench mortars are aimed at the enemy's trench.
60.—Use of the machine guns.
The machine guns fire directly at the assailants, with slight differences in height of aim, (knee high, waist high, etc.) according to the directions previously given to each man.
61.—Fire Control.
Carefully keep fire rifle under control and avoid wasting ammunition.
Never fire without aiming. If the ground ahead is flat, aim waist-high; if it slopes down, aim close to the soil; if it slopes up, aim at height of chest.
62.—Repulse with the bayonet.
If some of the enemy reach the trench, dispose of them with the bayonet.
63.—Save ammunition.