To defeat Nazi Germany, the Allies had to mount the largest amphibious attack in history. Nothing like it in size and scope had ever been attempted. Failure would mean, at best, prolonging the war. At worst, it would give Germany the chance to develop the "wonder weapons" they had been talking about for so long. Despite all of the mistakes and miscues of the Allied armies, as well as the great cost in lives, they secured the beaches with heroic determination...