The nazis were into a bunch of occult and pagan shit to mix in with their hot takes on Christianity. One reason they chose the swastika was because they believed in a made-up mythology about how the original Aryan race was the origin of the human civilization and their symbol was the swastika, which was “stolen” by Buddhists, Hindus, and various other groups.

So while the nazis were disconnected from the religions that used it, they had their own religious “interpretation” of what it meant.