CONCERNING ARTILLERY.
PRECAUTIONS AGAINST ENEMY'S ARTILLERY.
Whether preliminary to, in connection with, or independent of an infantry attack, the enemy may make use of his artillery.
This bombardment may be directed against the fire trench or back of the fire-trench.
70.—Case I.—Bombardment of the Fire Trench.
71.—All in shelter except sentinels.
Leave in the fire trench the necessary sentinels.