World War II: The <a href="https://en.wikipedia.org/wiki/Battle_of_Slater's_Knoll" id="mw4w" rel="mw:WikiLink" title="Battle of Slater's Knoll">Battle of Slater's Knoll</a> on <a href="https://en.wikipedia.org/wiki/Bougainville_Island" id="mw5A" rel="mw:WikiLink" title="Bougainville Island">Bougainville</a> comes to an end.