WHEN NEWS OF THE JAPANESE ATTACK ON PEARL HARBOR reached Germany, its leadership was absorbed by the crisis in its war with the Soviet Union. On December 1, 1941, after the serious defeat the Red Army administered to the German forces at the southern end of the Eastern Front, Adolf Hitler had relieved Field Marshal Gerd von Rundstedt, the commander in chief of the army group fighting there; the next day Hitler flew to the army group headquarters in the southern Ukraine. Late on December 3 he flew back to his headquarters in East Prussia, only to be greeted by more bad news: The German army group at the northern end of the Russian front was also being pushed back by Red Army counterattacks. Most ominous of all, the German offensive in the center, toward Moscow, not only had exhausted itself but was in danger of being overwhelmed by a Soviet counteroffensive. Not yet recognizing the extent of the defeat all along the front, Hitler and his generals saw their reverses merely as a temporary halt in German offensive operations.