The Malmedy massacre was a war crime in which about 90 American prisoners of war were murdered by their German captors during World War II. The massacre was committed on December 17, 1944, by Kampfgruppe Peiper (part of the 1st SS Panzer Division), a German combat unit, during the Battle of the Bulge. This massacre, as well as others committed by the same unit the same day and on the following days, was the subject of a trial during the Dachau Trials of 1946.