Adolf Hitler started World War II by attacking Poland on September 1, 1939. Nazi Germany moved only after it had already remilitarized the Rhineland, absorbed Austria and dismantled Czechoslovakia. Before the outbreak of the war, Hitler's new Third Reich had created the largest German-speaking nation in European history. Well before the attack on Pearl Harbor, the Imperial Japanese government had redrawn the map of Asia and the Pacific. Japan had occupied or annexed Indochina, Korea, Manchuria and Taiwan, in addition to swaths of coastal China. Attacking Hawaii, the Philippines, Hong Kong, Malaysia and Indonesia was merely the logical 1941 follow-up...