The Battle of Kalach took place between the German Sixth Army and elements of the Soviet Stalingrad Front between July 25 and August 11, 1942. The Soviets deployed the 62nd and 64th Armies in a Don River bridgehead west of Kalach with the intent of impeding the German advance on Stalingrad. In the initial period of the battle, the Germans attacked and managed to surround part of the 62nd Army. In reaction, the Soviets counter-attacked and temporarily forced the Germans onto the defense. Following resupply of German forces, the roles again reversed and the Germans attacked into the flanks of the Soviet bridgehead, successfully collapsing it. The German victory positioned the Sixth Army to cross the Don River and advance on Stalingrad, which became the site of one of the most decisive battles of World War II.