July 5, 1943, the fourth day of June (��δ years), the the Kursk battle started.

1943, the Germans to regain the strategic initiative, decided to launch a large-scale offensive in the Kursk region. War German army troops to the Central Army Group, and five Army of the Army Group South, about 90 million people; Soviet war and five army troops to the Central Army and the Voronezh Front's 14 Army, about 133 million people, and another as a strategic preparation 7 Army team grass highland Army and 10 Army. The battle to end on August 23, 1943. After this battle, the Soviets fully grasp the strategic initiative, the Germans completely lost from the strategic offensive ability, defensive across the board.