Take Dachau and multiply it by a hundred, that was Auschwitz.
And you ask why I shed no tears about what happened to Dresden?
We have a close friend who was a 15 year old girl who lived in Dresden during WWII. She had no input into what happened to the people in concentration camps. Neither did the American servicemen who were prisoners being held in Dresden and were made to dig bodies out of the rubble.
After the war our friend married an American serviceman. What she told us was horrific.
My wife's father was a tanker in WWII in the 3rd Armored Division. He was horrified by what he saw first hand at the Dora-Mittelbau concentration camp in Nordhausen, Germany. He said that he felt paralyzed by the smell and what he saw, and the people walking around who looked like they were already dead.
Dresden falls in the jurisdiction of fhayek rule #3. You have no right to bitch about the consequences of a war that you start.
There were others worse than Dachau for sure.