What happened to the Allied armies in Normandy in the months after D-Day? Why, after the initial success of the landings, did their advance stall a few miles inland? How did the Germans, deprived of air support, hold off such massive forces for months? A fresh and incisive examination of this most crucial campaign—with accounts from veterans on both sides—sheds new light on its demands and difficulties, as well as the plans and performance of all the commanders involved.