12. Japanese Kamikaze Torpedoes (Kaiten)
The Japanese Imperial Navy developed the Kaiten, a manned suicide torpedo, during World War II. Piloted by sailors, these torpedoes were intended to deliver explosive payloads directly into Allied ships. Despite their devastating potential, technical issues and enhanced Allied defenses limited their effectiveness. While a few attacks resulted in damage, the overall impact was minimal, rendering the tactic both brutal and ineffective. More information is available at the National WWII Museum.
