Germany's surprise attack on June 22, 1941, shocked a Soviet Union woefully unprepared to defend itself. The day before the attack, the Red Army still comprised the world's largest fighting force. But by the end of the year, four and a half million of its soldiers lay dead. This new study, based on formerly classified Soviet archival material and neglected German sources, reveals the truth behind this national catastrophe. Drawing on evidence never before seen in the West-including combat records of early engagements-David Glantz claims that in 1941 the Red Army was poorly trained, inadequately equipped, ineptly organized, and consequently incapable of engaging in large-scale military campaigns—and that both Hitler and Stalin knew it. He provides the most complete and convincing study of why the Soviets almost lost the war that summer, dispelling many of the myths about the Red Army that have persisted since the war and soundly refuting Viktor Suvorov's controversial thesis that