Adolf Schickelgruber, alias Hitler, was largely demented. He'd be sectioned these days, or be in charge of somewhere like Iran or Libya. He was delusional at a time when most Germans/Austrians/Sudeten Deutsche suffered from a corporate persecution complex.
They largely saw the German/Austrian surrender as a betrayal and blamed either of the Kaisers for pulling them into war in the first place. (It was originally Kaiser Bill's decision to back Kaiser Franz against Tsar Nick his cousin George and the French cockerel, come what may).
Additionally he laboured under the various pre-conceptions that Germans/Austrians do even nowadays about the world around them. For one thing he believed he was not alone in his fear of Communism in invading Russia, but like Napoleon before him underestimated the size of the country and its seasons. Up to the end he moved map pins around in his bunker, thinking them to be his no longer extant divisions.
Where he wasn't delusional was in his treatment of 'minorities'. That was plain insanity, but he couldn't have achieved all of it without his co-conspirators, the ones who 'were only obeying orders', and he couldn't have achieved his rise to power without the connivance of a large part of the German/Austrian population. Vichy France, Italy and Germany's other 'satellites' didn't lag behind in their part, however. The Vichy government embarrassed the Germans by pushing their 'undesirables' at them without being asked, as did the Belgians and Dutch. Blame was too conveniently allocated to a small group of high-ranking Nazis who could be easily identified. It would have been next to impossible to squeeze more into the courthouse at Nuremberg.
The French did manage to identify their own bogeymen, aka Laval and Petain. They knew there were many others, but the Paris courthouses would have been swamped as well!
It's just as well he did himself in, isn't it.