National Socialism (Nazism) was a reactionary movement. It was opposed to International Communism and thus the Communist forces in Russia. There were a great many communists in Germany pushing for it's "Workers Paradise."
The National Socialists, on the other hand, were nationalist first. They were rebuilding Germany after the destruction after WW1 and the failed Weimar Republic with 25% unemployment and many dead from the starvation imposed by the British fleet under Churchill even after they surrendered in 1918.
The British wanted Hitler in power to be a bulwark against the Communists, but they did not want him to be too powerful.
Peter Scherf a/k/a Prescott Bush was a Nazi and came to America to promote the causes of the Nazi party and to secure financing. The main conduit of financing was through Union Bank of NY.
Later on, Prescott Bush and GHWB along with the Dulles brothers, Harriman and Wild Bill Donovan created the CIA at the end of the war. The CIA, NASA and other parts of the gov't were staffed by Nazis brought over under Operation Paperclip.