Some documentaries claim that prior to Hitler prostituition including that kind of prostuition was very coomon because people were so poor and then after Hitler came into power the economy improved and it greatly decreased
Possibly Adolf Hitler the Greatest Story Never told might mention it but I am not sure and do not want to watch the documentary again
I never made it past the 2 or 3 hour mark so it would be in the first 2 or 3 hours and probably the 1st hour