World War II: German admiral <a href="https://en.wikipedia.org/wiki/Karl_Dönitz" id="mw5A" rel="mw:WikiLink" title="Karl Dönitz">Karl Dönitz</a> launches <a href="https://en.wikipedia.org/wiki/Operation_Hannibal" id="mw5Q" rel="mw:WikiLink" title="Operation Hannibal">Operation Hannibal</a>.