Snake Featherston
Banned
A German clusterfuck in 1940 produces a German disintegration by 1943 when the Germans' tenacious reliance on urban warfare leads to their entire army being cut off and destroyed in the Ruhr and the Rhineland, producing the collapse of Nazi military power and a Western joyride through Germany reducing any town so foolish as to fire a shot at them to rubble.
For a dark-horse possibility, avert the Soviet purges but butterfly-net any effect this might have on Stalin's actions, and in six months WWII in the East is over with Hitler's suicide in Berlin and the subsequent disintegration of the Nazi Empire. Outside of these two possibilities, having the Allies win WWII much earlier than IOTL is low probability. Especially if we assume the 1941 battles in the Axis-Soviet War go as per OTL.
For a dark-horse possibility, avert the Soviet purges but butterfly-net any effect this might have on Stalin's actions, and in six months WWII in the East is over with Hitler's suicide in Berlin and the subsequent disintegration of the Nazi Empire. Outside of these two possibilities, having the Allies win WWII much earlier than IOTL is low probability. Especially if we assume the 1941 battles in the Axis-Soviet War go as per OTL.