On 22 June 1941 The Germans launched their long-expected invasion of the Soviet Union. Codenamed "Operation Barbarossa," after the famous 12th century crusading emperor, what followed was perhaps the greatest clash of arms the world has ever witnessed, and one of the most ferocious, uncompromising conflicts in the history of modern warfare. With the aid of specially commissioned maps, Barbarossa: The First 7 Days describes the dramatic history...