Ha, you forgot the Italians.
They actually did more for our side, when they were part of The Axis.
You’re right!
The Italians might have won the war for us.
They got bogged down in the Balkans and the Germans had to rescue them, delaying the kickoff of Barbarossa, which mired the Germans down in a winter they weren’t prepared for, and, arguably, saved the Soviets.
They also got the Germans tied up in North Africa.
Without the delay to Barbarossa and their drain on German resources, the German might have won!
Mussolini did send his troops to USSR to help Hitler...