On June 22, 1941, preceded by a massive artillery and aerial bombardment along the entire 2,000-mile border, three million Axis troops and 3,330 tanks smashed into the Soviet Union. Adolf Hitler believed the campaign would be over in four months. Four years later, thirty-five million Soviets and five million Germans had been killed in a campaign that had ripped the heart out of the western USSR and Eastern Europe. It left the land gutted, the infrastructure...