Midget submarine, human torpedo and air attacks.
Location Unknown / Unclear.
Midget submarine submerging, periscope is seen. Midget submarine sailing on water surface. A member of the sub crew looking at camera.
Several shots of the 'human torpedo' (looks like a capsule with one seat) hanging on wires.
Various shots, from a plane in low flight, as it attacks German aircraft and other ground targets. Smoke and explosions are seen.