According to Operation Paperclip [1] part of the motivation for the US investigating weaponized LSD was the fear the Nazis were investigating it. But I'm not sure Nazi use was documented to the extent it was in the US, with the CIA's MK-ULTRA program experimenting on unknowing citizens by dosing them with LSD [2].
[1] https://www.amazon.com/Operation-Paperclip-Intelligence-Prog... [2] https://en.wikipedia.org/wiki/Project_MKUltra#Drugs