Aeon418 said:
Which book was that in ?
Crowley had no direct contact with the Nazi Third Reich as far as I am aware. But he did have a female German follower, Martha Kuntzel, who claims she tried to get Hitler to accept the Book of the Law in the 1920's. Of course she failed. It's worth pointing out that the Nazi's banned the OTO in Germany and put it's German head, Karl Germer, in prison because of his association with Crowley the OTO and Thelema.
In a letter written to Martha Kuntzel during the war years Crowley told her that "Britain would knock Hitler for six".
As far as I know, Crowley was never employed by a Nazi or anybody with Nazi affiliations. Symonds recounts a story of him being beaten up by "brownshirts" in 1934 somewhere in Germany (Berlin?) - that must have hurt, him being in his late 50s by that point. Nazism surely repulsed him - the Nietzschean will-to-power and Wagnerian romance/neo-paganism might have intrigued him, but the moral puritanism and intellectual obscurantism would definitely have overridden any fascination.
He never met Hitler, at least according to any source - himself or others - that I have read. Kuntzel was his closest contact - he might have harboured a belief that exposure to Thelema might have improved Hitler's character.
There is a story that Crowley suggested the "V for Victory" sign to Churchill, to counteract the magical effects of the Swastika. I can't remember if it was Crowley himself who originated this story.
As for the spying story, this might be a confusion of WWII with Crowley's activities in the USA during WWI. He wrote "propaganda" for a pro-German magazine "The Fatherland" (later amalgamated with "The International") while he was in New York city, 1914-1918. The British press, led by John Bull, considered this work to be treason, and wrote articles about Crowley with headlines like "A Man We'd Like To Hang". When he got back to England in 1919, he had to face the serious possibility of being formally charged with treason - I believe this was one of the reasons he sought out a change of location, finally settling in Cefalu, Sicily.
Crowley himself always claimed that the "propaganda" for the Fatherland and International was "reverse propaganda" or something like that - so over-the-top that the German case would be shown absurd. I personally think Crowley was just having a good time, and was making a little money in the process. It was also another venue for his magical writings, which besides his editorials became the bulk of the magazine in short order.