Japanese Special Attack Units

During World War II, Japanese Special Attack Units (特別攻撃隊, tokubetsu kōgeki tai; often abbreviated to 特攻隊 tokkōtai), also called shimbu-tai, were specialized units of the Imperial Japanese Navy and Imperial Japanese Army, normally used for suicide missions (specifically suicide attacks). They included kamikaze aircraft, fukuryu frogmen, and several types of suicide boats and submarines as well as smertnik infantryman.

Source: Wikipedia — Japanese Special Attack Units (CC BY-SA 4.0)