World War II: <a href="https://en.wikipedia.org/wiki/Battle_of_the_Bulge" id="mw5A" rel="mw:WikiLink" title="Battle of the Bulge">Battle of the Bulge</a>: <a href="https://en.wikipedia.org/wiki/Malmedy_massacre" id="mw5Q" rel="mw:WikiLink" title="Malmedy massacre">Malmedy massacre</a>: American <a href="https://en.wikipedia.org/wiki/285th_Field_Artillery_Observation_Battalion" id="mw5g" rel="mw:WikiLink" title="285th Field Artillery Observation Battalion">285th Field Artillery Observation Battalion</a> <a href="https://en.wikipedia.org/wiki/Prisoner_of_war" id="mw5w" rel="mw:WikiLink" title="Prisoner of war">POWs</a> are shot by <a href="https://en.wikipedia.org/wiki/Waffen-SS" id="mw6A" rel="mw:WikiLink" title="Waffen-SS">Waffen-SS</a> <a href="https://en.wikipedia.org/wiki/Kampfgruppe" id="mw6Q" rel="mw:WikiLink" title="Kampfgruppe">Kampfgruppe</a> <a href="https://en.wikipedia.org/wiki/Joachim_Peiper" id="mw6g" rel="mw:WikiLink" title="Joachim Peiper">Joachim Peiper</a>.