The Americans have always had a reputation for going big, and this trench mortar is a good example of the philosophy. Trench warfare was a constant grind, and artillery support and the lighter Stokes mortar needed to be supplemented by heavy mortars to attack enemy trenches. This mortar fired a 180-lb projectile at ranges between 600 and 2500 yards. The mortar’s task was to attack protected positions, stretches of trenches and even the first rank of the enemy gun line. Complete detail with many illustrations.