by Norman Ohler
ISBN: 1328663795
Buy on Amazon
Found in 2 comments on Hacker News
Not sure how accurate this is but there’s a book on how Adolf/Nazi’s were experimenting with hard drugs at that time.

https://www.amazon.ca/Blitzed-Norman-Whiteside-Shaun-Ohler/d...

They say Hitler was very charismatic, inspiring and a great public speaker. I seriously wonder how much drugs he was on at the time and how much that boosted and projected his own confidence (and then subsequently inspired all of his fellow countrymen Germans)?