Why did the Allies capture so few Japanese soldiers when they attacked Iwo Jima?

Japanese forces on Iwo Jima were expected to fight to the death rather than surrender, so very few became prisoners. Their strong fortifications helped them resist the Allied attack, but the main reason few were captured was that Japanese soldiers generally did not intend to survive by surrendering. Thus, “The Japanese had planned for no surviving prisoners” is the best choice.

AI-written and checked against the verified answer.