World War II: The <a href="https://en.wikipedia.org/wiki/Battle_of_Okinawa" id="mwsg" rel="mw:WikiLink" title="Battle of Okinawa">Battle of Okinawa</a> ends when the organized resistance of <a href="https://en.wikipedia.org/wiki/Imperial_Japanese_Army" id="mwsw" rel="mw:WikiLink" title="Imperial Japanese Army">Imperial Japanese Army</a> forces collapses in the Mabuni area on the southern tip of the main island.