The Mius Front was a strong defensive line created by the Germans in the autumn of 1941 along the river of the same name. The area was the scene of fierce fighting through much of the winter, spring and summer of 1941-42, as the Soviets attempted to break through, albeit unsuccessfully. However, in the summer of 1943, in an enormous strategic offensive overshadowed in Western literature by Operation Citadel, the Soviets launched a successful attack that penetrated the German defences. This overlooked operation is described in detail by Alexei Isaev, using both Russian and German sources. The text is supported by a large number of photographs of the armoured forces involved, as well as specially commissioned maps.