Comment by WalterBright

None of the history classes in grade/high school I attended advanced after 1900.

However, I knew a lot about WW2 because my dad (and relatives) was heavily involved in it, and also became a historian when he left the AF. He had a mountain of history books, mostly about aviation and WW2. I read some of them, and watched movies like "The Blue Max" and "The Battle of Britain", the "World At War" series, and so on. There are also endless WW2 documentaries on TV.

My neighbor was a paratrooper who lost his leg, my dad's best friend was a P-51 pilot who had his face burned off in combat. WW2 vets were everywhere. They're all dead now, and WW2 is ancient history.