I should point out that the industrial bit of the USSR was the bit the Germans invaded first. The Soviets had to move their entire industrial heartland a thousa

I should point out that the industrial bit of the USSR was the bit the Germans invaded first. The Soviets had to move their entire industrial heartland a thousand or so miles east out of harm's way and rebuild it before they could start producing stuff. When they did, they produced vast amounts of war material, and possibly would have beaten the Germans single-handedly given another year or two.