One of my all-time favorite Stuff You Should Know episodes was "What are Japanese stragglers?" -- the one about the numerous Imperial Japanese soldiers who continued to fight long after the war was over on islands in the Pacific invaded by the Japanese. I liked the episode, among other reasons, because it managed to combine the Bushido code of the Samurai and Gilligan's Island
During World War II, Japanese soldiers adopted a version of the samurai code of honor. Fiercely commited to this ideology, some continued to fight even after the war ended. Learn more about these "stragglers" in this podcast from HowStuffWorks.com.