The Battle of Moscow is the graveyard of German armor in 1941, but the Soviets are too depleted by their own victory to begin more than a sequence of local offensives for some time in 1942, the Germans defeated by a combination of massive attacks from the Soviet Western and Southwestern Fronts. The German offensive sees the usual Nazi blend of stupid valor, complete ignorance of logistics, slipshod management, appalling brutality, and coming just so near and yet so far to success at various points in a venture foredoomed to fail from the start. Hitler purges his generals when their big baby turns out to be a bust and starts running the war all by himself by 1942.