Did Hitler accumulate any wealth before a World War II, or during the war?
I've written on this topic before. I'd point to these two threads:
https://www.reddit.com/r/AskHistorians/comments/3lh8xz/was_hitler_corrupt_like_other_dictators_of_the/cv6ig5c
https://www.reddit.com/r/AskHistorians/comments/9kv001/what_happened_to_hitlers_bank_account/e72gd8l/