… Warfare

The use of poisonous and asphyxiating gases in attacking the enemy, either by emanation or by means of shells and grenades. The first requires a favorable breeze of about five miles per hour and there must be no rain. In the shells and grenade method of di emination, shells and fcombs are used containing liquid gas, or a substance which gives off irritant fumes. … Blocking. — A gate arrangement used as a block at intervals along a trench as a means of holding the enemy back temporarily should he gain an entrance to the trench. hering the Horse. — In cavalry, a preparatory signal given to the horse, at the same time a preparatory command is given, by the rider, who increases the pre ure of the lower legs, with heels well shoved down, and slightly increases the tension of the reins. lin; Gun. — An American machine-gun, consisting of a cluster of battels which, being revolved by a crank, are automatically loaded and fired.