Contrary to popular nonsense, Hitler didn’t invent anti-Semitism. Germany was already crazy anti-Semitic ten years before he was in power.
I remember that Goering went to university in 1921 and none of the German Gentiles would have anything to do with German Jews. It was that bad. Goering that that was stupid and joined the swim team that was full of Jews. He couldn’t care less about Jews. Goering was never a personal antisemite. But he went along with it anyway on a “just following orders” basis and the deaths of many Jews lay at his feet. If you’re Jewish and dead, I don’t think it matters whether he was a personal antisemite or not.
The German military in particular was very anti-Semitic, especially the officers. But in the war, the military was probably the least anti-Semitic part of the regime. The reason the Einstazgruppen were created was because originally they gave the job to regular soldiers and it wasn’t working.
There was lots of insubordination, faking sick leave, and of those who did it, a lot of hatred for what they did and PTSD. It was a big fail. So they created the Waffen SS – the Nazi Party part of the Army – to do the things the soldiers would not do. The Einsatzgruppen were created out of a lot of SS men and fanatical volunteers. They were the ones who killed all the Jews in the USSR because no one else had the stomach for it.
About the gas chambers and ovens, it’s weird that genocidal maniacs have sensitive stomachs to gross things like death and corpses as they traffic in them so much. At first they were just lining Jews up against walls and shooting them in Europe. Goebbels of all people witnessed one of these mass shootings and became absolutely hysterical. He completely lost it, screaming, yelling, crying, breaking down. He didn’t mind killing people. He just wanted it done in a nice, sterilized fashion where it looked more like an entry in an accounting book than a coldblooded murder.
So they created the death camps. Some notorious ones in the East like Sobibor were more extermination camps than concentration camps. They were just shooting them or even hanging them there and then burying them in mass graves in the fields. Goebbels came to visit one day. Turns out there were so many decomposing bodies in those graves that the ground itself was heaving up and down like some horror movie.
Goebbels saw the ground heaving up and down like that and was told why that was happening and once again, he completely flipped and lost it. Poor guy was a mass murderer, but he was a genocidal monster with a sensitive stomach. Germans were civilized people after all. If you’re going to kill people, be as decent and civilized about it as you can.
Eventually mass shootings themselves in favor of gas chambers as a more sterile, civilized, and even humane way to do this. And the problem of the mass graves was taken care of by the ovens. Ash doesn’t decompose badly. And the disgusting task of gathering up the bodies and putting them in incinerators was given over to Jews themselves (“capos”) as even concentration camp guards (almost all SS) themselves were known for their sensitive stomachs or at least civilized sensibilities.