The 75mm pack howitzer M1 was a pack howitzer designed in the United States. The gun saw combat in World War II with the United States Army and the United States Marine Corps, and was also supplied to foreign militaries. Initially designed to be moved across difficult terrain, the gun and carriage could be broken down into several pieces to be carried by pack animals, and this ability as well as its compact size allowed it to be used by paratroop and glider forces.