In this incisive analysis, we see exactly how the Allies won in WWII and regained military superiority and why they were able to do it. Overy offers a brilliant analysis of the decisive campaigns: the war at sea, the crucial battles on the eastern front, the air war, and the vast amphibious assault on Europe. The eastern front was critical. Having lost four million men and tens of thousands of tanks and aircraft in the first six months of fighting, the Soviet Union was able to relocate its industrial base to the east, intensify its industrial production, and defeat the German forces at Stalingrad and Kursk; this was the turning point.