Saigo overhears General Kuribayashi radioing orders to retreat northward. Kuribayashi's commanders disobey his orders to fall back and solidify the northern defenses so they and their men can die with honor. In the film's most horrifying scene, a group of soldiers commit suicide by grenade, one by one. They would rather die then fall in enemy hands. The men follow the Bushido code. Under this code, if a samurai warrior failed to uphold his honor he could regain it by performing seppuku (ritual suicide).