In 1939, Franz Halder, the Nazi Army Chief of Staff, had a back-channel talk with Raymond Geist, American Counsul at the US embassy in Berlin. Geist passed the conversation up to the US Secretary of State : GHDI - Document,
Raymond Geist’s Report on his Conversation with Franz Halder, April 13, 1939.
Halder confided to Geist that the Nazi military was essentially powerless to blunt Hitler’s aggression. He feared that Germany was setting off a global conflict which would result in “America … throwing the weight of her resources and support on the side of Germany’s potential enemies.” This, he felt, would lead not only to German defeat, but also to the near-destruction of all Europe. (Nailed it.)
Halder was relieved of command shortly after America and Germany began a shooting war. He took some initial steps - twice - toward a plot to assassinate Hitler but backed out before they developed.
After the Nazi defeat, the Allies made no charges against Halder at the Nuremberg Trials, where he testified against some of the defendants.
The difference between a Socialist and a Communist is that the Socialist doesn't have all the guns yet