Great Britain has not been invaded in 900 years. But it is 1942, and five thousand ships carrying two hundred thousand soldiers—have just left the German coast and the coast of occupied France. The Third Reich’s armada will cross the English Channel and attempt to conquer the United Kingdom. Hitler’s bold stroke will end World War II with Germany master of all of Europe. The British are not alone. An American army has been in England since Pearl Harbor but the Yanks are raw and ill-equipped. In command of the Americans is General Wilson Clay, who will drive his soldiers to their limits. He is determined to enter history as one of its greatest commanders. S-Day is the story of a desperate battle, of heroism and brutality, and of an American general’s agonizing decision to use the ultimate weapon of war.