A detailed, illustrated study of Germany's Panzer forces that invaded the Soviet Union, explaining how and why they performed as they did. Operation Barbarossa, Nazi Germany's huge and fateful invasion of the Soviet Union, was the culmination of nearly two years of European conquests. By the time of Barbarossa, Germany's Panzer forces had honed their Blitzkrieg methods of fast-moving warfare, but fighting across the wide expanses of eastern Europe would present them with their greatest challenge yet. While the Germans overran the Red Army at the start of the campaign, Barbarossa would end in failure. Written by one of the world's experts on armoured warfare, and presenting newly uncovered data on the forces involved, this book explains the doctrine, organization, and technical capabilities of the Panzer forces, with a short overview on the armour of other Axis forces including Hungary, Romania, Slovakia, Finland, and Italy. The speed and shock value of the Panzer divisions was essential for the Wehrmacht to prevail over the Red Army in a brief campaign of annihilation. Packed with archive photos and superb original tank illustrations, this book explains how problems with the Panzers were a significant reason for the eventual failure of Barbarossa.