 Complete the following phrase:  Hospitalized for treatment of illness from 13 March to 4 April 1942, Lebedenko returned to command of the 50th after recovering. During this period, the division held defensive positions west of Gzhatsk. In August it transferred to the 33rd Army and successfully acted in the army offensive operation. In early February 1943 the division was shifted to the Southwestern Front and joined the 1st Guards Army, defending on the line of the Seversky Donets. From July, as part of the 33rd Rifle Corps, the division fought in the IzyumBarvenkovo offensive, the 