I was just 12 years old when WWII ended and in our NYC neighborhood we had a lot of vets, some of 'em full of war stories. One guy told of being with a bunch who liberated a concentration camp, and were sickened by what they saw.
He said one guy, who had been in since D-Day, was Ok - until he went into a room that had a couple of bins of baby shoes. He went ape and shot a couple of the guards before he was stopped. The a-hole officers were going to court martial the guy, but somehow it never went through.
My father (88th, 351st Army Infantry) was with a group that liberated one of the camps in Germany. He stood in his front yard that was one-eighth of a mile from the main highway. He pointed to the main highway and said, “I’ve seen bodies piled ten feet high for a distance of one-eighth of a mile at one of the camps.” He couldn’t pronounce German names much; but I think it must have been one of the more obscure camps that wasn’t shown in many of the first films from that era. People were more squeamish about stuff like that back then. In retrospect, they shouldn’t have been. Lately on PBS, they have shown some film that had never before been seen from that era.