This widely praised study draws from both American and German sources to show how the U.S. Army Air Forces cleared the way for the successful Allied invasion of France. In 1944 a revitalized American leadership abandoned the unsuccessful approach of strategic bombing and instead focused on air superiority, practically chasing the enemy out of the sky and eliminating Germany's supply of trained pilots. Examining the people, technologies, command decisions, and key events of the war over Germany, the authors prove conclusively that the winning of air superiority -- not the success of strategic bombing -- played a more essential part in the Allied victory in Europe