 Complete the following phrase:  Following the Soviet victory at Stalingrad and the destruction of the German 6th Army, the 13th Guards are again pulled from the lines for re-fit and re-supply. Alongside the 5th Guards Army Voronezh Front, the division was held in reserve south of Kursk, in order to counter the forthcoming German offensive there  Operation Citadel. The original intention was for these two formations to counter-attack the Germans after the German assault had been ground down by the front line Soviet units, but both formations were committed to prevent a possible breakthrough. After several days of continuous fierce fighting including the tank 