It's impossible to understand what it was like to live through World War II unless you were there, so casting judgment on the time or the decisions made is always precarious.
The scope of the conflict alone is unimaginable by today's standards.
Still, this 1943 propaganda film "Education for Death: The Making of the Nazi" is not to be believed. It is simultaneously baffling and hilarious and frightening. I was mesmerized by every second of the thing.