Larry Smith wrote:

I could have sworn hearing my dad, who was serving in the Philippines at the
end of WWII, telling how some of the Japanese soldiers in the islands
refused to give up and continued to fight, even after the war was over and
Japan had surrendered.

There were some Japanese that were overrun on various islands that
refused to believe that the war was over and they lost. I believe the
last known one to come out was on Guam in the 1970's. The History
Channel did a show on it. They showed footage of a few of these guys
coming out. I don't think they ever shot anybody after the war though.