Grenade

In gunnery, is a shell thrown from the hand, or in barrels from mortars of large caliber, and ignited as other shells by means of a fuze. There are hand-grenades and rampart-grenades; old 6-pounder spherical-case may be used for the former, and shells of any caliber for the latter. Grenades are useful in the defense of works, the smaller, thrown by hand into the head of a sap, trenches, covered way, or upon the besiegers mounting a breach; the larger kinds are rolled over the parapet in a trough. Hand-grenades are intended to be used against the enemy when he has reached such parts of the defenses (the bottom of the ditch for example) as are not covered by the guns, or the muskets of the infantry posted on the banquettes. After the enemy has pa ed the abatis and jumped into the ditch, hand-grenades will be used; and then if he mounts the parapet, he must be met there with the bayonet. Ketchum’s hand-grenade is a small oblong percu ion shell which explodes on striking the object.