When did Adolf Hitler lose the chance to win world war 2 ?
What was the moment in time that before it he could still possibly win the war, and after it his defeat was a matter of time ? (and long continued fighting that still cost so many lives).
When was it? How early or late was it ?
How about starting from a relatively late date, when we're sure that Hitler's defeat was just a matter of time, and from it go back in time to a date that marks the change, that marks when Adolf Hitler lost the chance of winning the war he started. Let's see...
In the summer of 1944, with unstoppable massive forces of the western allies pushing from west and unstoppable massive soviet forces pushing from east, with devastating massive air bombardment, both tactical and strategic, that the already exhausted Luftwaffe could not stop, and with his submarines now being the hunted instead of hunters, it's obvious that Hitler had already lost the war.
So it's a good starting point. Now let's step back in time.
In mid-1944, before D-Day, Russia was already unstoppable, even without an invasion of France. The part of the western allies was of course very significant. The threat of an invasion that kept a significant part of the German forces in the west, the air war that increasingly eroded Germany's ability to support its war effort, and the continuing massive material support of the western allies to Russia, were all very important contributing factors. But I think we can agree that by mid-1944 Germany was already losing the war, because although it kept fighting fiercely, it could not stop Russia's massive continued advance all over eastern europe, en route to Berlin.
If we look back in time, we...