U.S. 3.6 inch field gun the mortar, they used the same projectiles. Spanish American War era. Bag gun. Here is the Mortar:
http://rememberthemaine.com/?wpsc-product=3-6-inch-us-army-m1892-mortar
From internet: excerpt
UNITED STATES. The field gulls proper in the United States service arc the 3.2-inch gun, the 3.6-inch gull, and the 3.6-inch mortar (see ac companying table). The 3.6-inch gun is a breech loading ride of greater weight and power than the 3.2-inch gun, which latter is more especially adapted to the service of the horse-artillery arm. The gun is essentially the same, as to form and characteristics, as the 3.2-inch gun, weighing 1181 pounds and using a 20-pound projectile. The 3.6-inch breech-loading field mortar for vertical fire is used to reach troops protected by intrenchments or otherwise from the direct tire of the field guns. It fires the same projectiles as the 3.6-inch field gun, and has an extreme range of about two miles. Reduced charges are used for the shorter ranges. The mortar weighs 2-14 pounds, and uses a charge of 15 pounds of powder with a 20-pound projectile.
The United States has 30 batteries, six guns each, of field artillery, being about 2.4 guns per 1090 men in the army.
Extensive tests of field-artillery material were held in 1902. The choice of weapons narrowed to a gun of the United States Ordnance Depart ment, invented by Captain Wheeler, United States Army (see ORDNANCE), and the famous Ehrhardt gun, brought out by an amalgamation of German firms with headquarters at Diissel batteries of these guns. illore recently Norway ordered 22 of these batteries. The Ehrhardt gun caused Switzerland to hesitate when almost nn the act of rearming her field artillery with Krupp guns. German:, and Austria made ext•n sive tests of these guns, and Krupp, Schneider Canet, and Saint Chamond have all produced 'long recoil' carriages in place of former designs. The Ehrhardt carriage is composed of two parts —the lower, which includes the wheels, axle, and telescopic trail, and the upper, which includes the U-shaped cradle which contains the hydraulic spring buffer, allowing of about 47 inches recoil.
