On the Italian front: MSs of Canadian or British soldiers loading a shell into a heavy mobile siege gun with rubber tires, firing. Tremendous recoil absorbed by large chocks behind the wheels. Intercuts of men firing trench mortars in a street of an Italian town. Shots of heavily smoking targets in town. Tanks move by the camera in a narrow street as Italian civilians stand against the wall, greet the troops. HAS along long rows of concrete tank obstacles.