Воронежский фронт
On 5 July 1943, the Wehrmacht launched its offensive. On the northern side of the salient, the German forces bogged down within four days. On the southern side, the German 4th Panzer Army, with Army Detachment Kempf on its eastern flank, attacked the Soviet defences of the Voronezh Front. They made slow but steady progress through the Soviet defensive lines.