By 1943, the Soviets had reversed some of their losses to the German invasion, and had even managed to create a bulge in the German lines around the town of Kursk. In an Attempt to straighten his lines, Hitler launched Operation Citadel on July 5, 1943, starting what would become known as the Battle of Kursk. Allied intelligence tipped off the Russians that the Germans were about to launch their attack, and the Soviets were ready. The Germans gained initial success, driving as far as 25 miles into the bulge.
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