World War II: Battle of the Bulge: Malmedy massacre: American 285th Field Artillery Observation Battalion POWs are shot by Waffen-SS Kampfgruppe Joachim Peiper.

The Battle of the Bulge, also known as the Ardennes Offensive or Unternehmen Wacht am Rhein, was the last major German offensive campaign on the Western Front during the Second World War, taking place from 16 December 1944 to 25 January 1945. It was launched through the densely forested Ardennes region between Belgium and Luxembourg. The offensive was intended to stop Allied use of the Belgian port of Antwerp and to split the Allied lines, allowing the Germans to encircle and destroy each of the four Allied armies and force the western Allies to negotiate a peace treaty in the Axis powers' favor.

The Malmedy massacre was a German war crime committed by soldiers of the Waffen-SS on 17 December 1944 at the Baugnez crossroads near the city of Malmedy, Belgium, during the Battle of the Bulge. Soldiers of Kampfgruppe Peiper summarily killed eighty-four U.S. Army prisoners of war (POWs) who had surrendered after a brief battle. The Waffen-SS soldiers had grouped the U.S. POWs in a farmer's field, where they used machine guns to shoot and kill the grouped POWs; many of the prisoners of war who survived the gunfire of the massacre were killed with a coup de grâce gunshot to the head.

The 285th Field Artillery Observation Battalion was a United States Army unit that saw action in the Battle of the Bulge in World War II. Their main mission was to identify the location of enemy artillery using the "sound and flash" technique.

A prisoner of war (POW) is a person held captive by a belligerent power during or immediately after an armed conflict. The earliest recorded usage of the phrase "prisoner of war" dates back to 1610.