Yes there were people heavily involved in the occult at the highest levels of the Nazi party but as I said before there is absolutely no evidence that Hitler was, and in fact there's quite a bit that proves the opposite.
Trevor Ravenscrofts book remains one of the most popular sources for occult version of the history of the Third Reich. Ravenscroft is an anthroposophist, which is to say a follower of Rudolf Steiner, one of the wackier occult leaders to come out of Central Europe, and the founder of the Waldorf system of schools. His approach to history is appropriately dogmatic, and based on clairvoyant visions of Steiner and other anthroposophists, predominantly one Walter Johanes Stein, whom Ravenscroft claims was a friend of Hitler in Vienna, during the period in Hitlers life about which academic historians know the least. Stein supposedly was among the first Hitler discussed his occult discoveries with, and he is used as a source for some of the most unlikely passages of the book.
His main source here is anecdotal evidence from Walter Johannes Stein, an Austrian philosopher who knew Adolf Hitler personally before WW1 and would later become a spy for Britain during WW2, when Ravenscroft met him. What the book is useful for, though, is a comprehensive guide to many of both the myths surrounding the Spear of Destiny and the Holy Grail as well as the beliefs of the Thule Society, the occult secret society to which the original Nazi Party was connected, and interwar Germanic occultism in general even though it's obviously filtered through the author's own strong religious beliefs.
Many people will dismiss the book out of hand because its spiritual content goes so heavily against their incomplete world view. Even if we dismiss some of the claims that are more difficult to substantiate, the occult practices of the Nazis are well documented and were effective.
All of these occult elements make for fascinating topics, and only near the end of the book does Ravenscroft really tie it all together by introducing the work of Rudolf Steiner into the equation. I think the book could have been a better read had Steiner's work been introduced earlier and integrated more smoothly into the narrative.
When Trevor Ravenscroft started examining how radical Islam would become the western worlds major protagonist, I thought he had lost the plot. Now I remember how he states in the sequel to this book that when the war against radical Islam is over, a greater conflict with the Chinese will take over.
At Nuremberg the occult practices and obsessions of Nazi germany were ignored. Only an expert on occult history, lore, and practice could point out the actual errors in this book.
In truth, this book is about Adolf Hitler, his ideology, and his search for the Spear of Destiny. His belief in the power of the spear, his search and ultimate possession is laid out here for the reader. The author also relays personal accounts who saw the madness and evil take control of Hitler as he pursued ultimate power through the spear and his dark destiny. The book is also ripe with conspiracy theories, secret societies, mythical references and prophetic beliefs.The book is more than a tale of the Spear of Destiny, it is the tale of the temptation, obsession of the occult and the ultimate possession of Adolf Hitler.
Make of that what you will.) The central theme of Ravenscroft's book is Hitler's strange fixation on an ancient Roman spear, which some believe was the weapon a Roman soldier named Longinus used to pierce the side of Jesus, ending his suffering on the cross. The spear of Longinus came to be known as the Spear of Destiny because the legend surrounding the weapon stated that whatever nation possessed the spear would control the fate of the world. According to Ravenscroft, one of Hilter's primary motivations for expanding German territory prior to World War Two was to possess the spear, which came about in 1938 with Germany's takeover of Austria. Ravenscroft also explores Hitler's occult beliefs and practices, an area mainstream historians either don't know about or, if they do, they avoid discussing because they don't want to seem weird.