World War II: The <a href="https://en.wikipedia.org/wiki/Battle_of_Arawe" id="mw8A" rel="mw:WikiLink" title="Battle of Arawe">Battle of Arawe</a> begins during the <a href="https://en.wikipedia.org/wiki/New_Britain_campaign" id="mw8Q" rel="mw:WikiLink" title="New Britain campaign">New Britain campaign</a>.