When I was in college, there was a german professor whose grandfather had served in WWI and whose father was drafted during WWII. They were not Nazi. She told a story of when her father received news of his draft, he asked his father what he should do. His father, the WWI veteran said, "do your duty, and surrender to the first American you find." Germany at the time had multiple political parties and power would get scattered. In order to form a government a party would have to form a coalition. That is how Hitler came to power. He had somewhere in the neighborhood of 30% of the vote with the opposition scattered among several other parties. Certainly not all German people supported the direction their country went. It is never a good idea to ignore history.