Had D-Day failed, would Hitler have won the war?

[Michael Z]

No, but since there would have been no Allied presence in mainland Europe it's very likely the Red Army would have swept across the continent, with Stalin ruling all of Germany, and possibly France and other western European nations. Either way, it would have been a disaster.

[Michael Z]

I think we would of pulled out of Europe, but still defeated the Japanese in 1945.

I agree. The USA would have won the Pacific campaign regardless of D-Day. However, without D-Day the USA would have to face a scenario in which it endures a Cold War, either with Nazi Germany or a pan-European Soviet Empire. Scary thought.

However, Ilikeverin may also be right in that the Allies might have nuked a major German city, bearing in mind that FDR and Churchill were planning on dropping a nuclear bomb on Cologne had they found themselves unable to invade Germany.

[Michael Z]

Germany would have developed the ABomb as they were VERY close during the real war! They would have used one on London and one on the front line Russians and all sides would have sued for peace.

One of the great ironies in history is that the Americans managed to intercept a shipment of materials which the Germans sent to Japan in order to help the Japanese develop a nuclear weapon. Those materials were later used for the nuclear bombs dropped on Hiroshima and Nagasaki. Just a random historical fact which entered my mind there.