Kiev was finally liberated on Nov. 6. Over the following weeks see-saw battles took place west of the city, but by Dec. 26 the army had joined a new offensive against 4th Panzer Army towards Zhitomir. Between Jan. 27 and Feb. 11, 1944, the 13th and 60th Armies joined with the 1st and 6th Guards Cavalry Corps to drive through the overextended German flank on the southern fringe of the Pripiat Marshes, unhinging their defenses, liberating Rovno and Lutsk, and taking favorable positions to continue operations into Army Group South's rear.