Have they any asphyxiating gas or liquid fire apparatus?
Have they abundant supplies of hand grenades, etc., etc.
DEVICES TO DRAW THE ENEMY'S FIRE.
42.—To make enemy waste ammunition.
Any devices which lead the enemy to waste ammunition or to expose themselves is a clear gain.
Many may be readily devised and officers and men should be encouraged to do so. The following have often proved successful:
43.—Pretend abandoning trench.
Remain absolutely quiescent during several days. This may lead the enemy to send out patrols or raiding parties which may be the more surely destroyed. They should be allowed to approach to the wire entanglements before a shot is fired.