LIFE magazine's special 1945 Collector's Edition (published on June 5, 1995) described the aftermath of the April 13, 1945 atrocity in Gardelegen, Germany where the SS herded 1,000 slave laborers into a barn,"soaked it with gasoline and set it on fire."
No one survived.
"General Eisenhower, informed of the atrocity, imposed a solemn penance on the town. For every victim, the local U.S. commander assigned a villager who had to dig a grave in the village green, bury a body there and mark the grave with a headstone inscribed with the victim's name - and with his own. Lest they forget."