[bananarepublican23]

Catholicism and Christianity must have been responsible for the Holocaust
I never heard that one. The nazis ended up going after almost everyone. In one concentration camp, a large section was set aside specifically for deadly medical experiments on Catholic Priests. I beleive they gave them all malaria
priests
Nazis were against all religion. They wanted to replace it with worship of the state.

[VOA]

The accussation that Hitler and Germany were a huge Christian crusade is
a common saw uttered by certain groups.

That accussation simply reflects an "agenda" and/or deep ignorance in the speaker.

At the same time...I will understand some of the groups that suffered the most
during the war for having harsh feelings about "Christianity". The churches and
too many individual Christians folded and failed the moral tests of the time.
(I'm not being judgemental...I fear I might have also done the same
expedient, safe and very wrong things if I'd been in their shoes.)

[Sonny M]

They wanted to replace it with worship of the state.

I'm not totally positive about that.

Hitler, and the guys around him, had some strange bizzare relgious beliefs.

I'm not sure how to describe it accuratly, Nordic? Pagan?

Hitler also had strong interests in the occult, but the Viking, relgious thing, his people and him had, is still, something of note.

Was it a hobby he had? Was he following a defunct religion? Was he playing mix and match? Why did the people he surround himself with have a fetish for the religion of the Vikes?