I know how Germany could have won WWII. Good God I wish the Fuhrer had thought of this. Go to Africa and find a black man. Install him as the titular German head of state, with the Fuhrer actually calling all the shots, but this black guy as the public face. The Western powers would have given him affirmative-action consideration for winning a war!
Imagine the impassioned speeches in favor of Germany ringing through the House of Commons after Germany's invasion of Poland. "No black man has ever won a war in Europe. This is an idea whose time has come!" "How dare the Poles stand in the way of this unprecedented social progress!" "We shall give them (the Germans) preference on land; we shall give them preference on the seas; we shall give them preference in the skies; we shall give them preference in the mountains and on the steppes, on the deserts and on the tundra!" "A thousand years hence all men will know that this was diversity's finest hour!"
The Soviet Union would have bitten the dust at least 45 years sooner than it did, because ole' Uncle Joe wouldn't have gotten any outside help, and there would have been no others interfering with Germany's invasion of the east by waging war against Germany elsewhere. If only the Fuhrer could have "thought outside the box" like I have just done. Call it "blackzkrieg"!
Tell the Western Powers that all the inmates in Auschwitz are there for having used the "n" word. The US would then have happily supplied the zyklon-B!