World War II: <a href="https://en.wikipedia.org/wiki/Operation_Vengeance" id="mwvQ" rel="mw:WikiLink" title="Operation Vengeance">Operation Vengeance</a>, Admiral <a href="https://en.wikipedia.org/wiki/Isoroku_Yamamoto" id="mwvg" rel="mw:WikiLink" title="Isoroku Yamamoto">Isoroku Yamamoto</a> is killed when his aircraft is shot down by U.S. fighters over <a href="https://en.wikipedia.org/wiki/Bougainville_Island" id="mwvw" rel="mw:WikiLink" title="Bougainville Island">Bougainville Island</a>.