Siege-train.
（Ordnance.) The artillery, with its carriages and equipments, which is carried with an army for the purpose of attacking fortified places. The guns are of sufficient caliber for breaching walls, but not too heavy for convenient transportation in the field. 18pound-er and 24-pounder smooth-bore guns, 8-inch howitzer, light 8-inch and 10-inch mortars, and, in the United States service, a rifled gun of 4 1/2 inches caliber are employed. The gun-carriages are similar in general construction to those used for light artillery, and are unaccompanied by caissons A peculiarly constructed wagon is employed for transporting the mortars. The ammunition and other supplies are carried in ordinary wagons, all of which are included in the general term siege-train.
