Did Hitler know everything about the concentration camps? Like how they killed them? Or the labor they were forced to do? I'm just curious if he was very involved in how they killed the Jews or if he let someone else deal with the details.
You may find these answers by /u/commiespaceinvader to be informative:
Did Hitler know about the Holocaust?
How do we know that Hitler himself ordered the mass extermination of the victims of the Holocaust.