1944 D-Day fails due to storms devasting the fleet. (Edit: Ooops, I just noticed PoD is too early)
The allies concentrate on a slow advance through Italy, and invasion of Norway, and an limited attack on the South of France. In April 1945, D-Day II successfully establishes itself in Pas-de-Calais.
The Soviets over-run all of Germany, Austria, Denmark, Netherlands, and cross the Rhine into France and Belgium.
The war ends in late May 1945, when the Soviets meet the western allies in Strasbourg.
All the major Nazi leaders are captured by the Soviets. They are "re-educated" to say what they are required to say, by the NKVD.
Tension between the Allies and the USSR is high, because the USSR refuses to withdraw to the previously agreed spheres of influence.
The Soviets hold a show trial of Nazi leaders in Nuremberg. Hitler is acquitted when he testifies that World War II was entirely the fault of British and the US plutocratic capitalist interests.