The Gardelegen massacre was a massacre perpetrated by the German local population with minor direction from the SS during World War II. On April 13, 1945, on the Isenschnibbe estate near the northern German town of Gardelegen, the troops forced over 1,000 slave laborers who were part of a transport train evacuated from the Mittelbau-Dora and Hannover-Stöcken concentration camps into a large barn, which was then set on fire.
1,016 prisoners, of which the largest number were Poles, were burned alive or shot trying to escape. The crime was discovered two days later by Company F, 2nd Battalion, 405th Infantry Regiment, U.S. 102nd Infantry Division, when the U.S. Army occupied the area.
Wikipedia https://en.wikipedia.org/wiki/Gardelegen_(war_crime)
Email info-isenschnibbe@stgs.sachsen-anhalt.de
Coordinates 52°32'16.26" N 11°25'14.109" E