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In page Blitzkrieg:

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At the Battle of Kursk, the Red Army used a combination of defence in great depth, extensive minefields and tenacious defense of breakthrough shoulders. In that way, they depleted German combat power even as German forces advanced.[citation needed] The reverse can be seen in the Russian summer offensive of 1944, Operation Bagration, which resulted in the destruction of Army Group Center. German attempts to weather the storm and fight out of encirclements failed because of the Soviets' ability to continue to feed armored units into the attack, maintain the mobility and strength of the offensive and arrive in force deep in the rear areas faster than the Germans could regroup.[citation needed]