In a video put on YouTube, PJ Media interviews Richard Weikart about his book, Hitler's Religion. According to Weikart, Hitler was neither an atheist nor a Christian (although he was baptized as a Catholic), nor even an occultist. I would add that he was not trying, as far I know, to bring back the old Germanic paganism. To learn Weikart's thesis, watch the video.
You can also watch the video directly on YouTube.