World War II: <a about="#mwt80" data-mw='{"parts":[{"template":{"target":{"wt":"USS","href":"./Template:USS"},"params":{"1":{"wt":"Grouper"},"2":{"wt":"SS-214"},"3":{"wt":"6"}},"i":0}}]}' href="https://en.wikipedia.org/wiki/USS_Grouper" id="mw7Q" rel="mw:WikiLink" title="USS Grouper" typeof="mw:Transclusion">USS<span typeof="mw:Entity"> </span><i>Grouper</i></a> torpedoes <i id="mw7g"><a href="https://en.wikipedia.org/wiki/Lisbon_Maru" id="mw7w" rel="mw:WikiLink" title="Lisbon Maru">Lisbon Maru</a></i>, not knowing that she is carrying British prisoners of war from Hong Kong.