 Complete the following phrase:  In March 1942, he was sent to the Volga Military District to serve as the chief of staff of the 153rd Rifle Division, forming at Chapayevsk. On 12 July, the division as part of the 63rd Army arrived on the Stalingrad Front, taking up defensive positions along the left bank of the Don River in the area of the Kazanskaya and Vyoshenskaya stanitsas, fighting in the Battle of Stalingrad. Until mid-November, the division units firmly held their positions, and in early December it became part of the newly formed 1st Guards Army of the Southwestern Front, participating in Operation Little Saturn. For its courage and heroism, the 153rd was converted into the 57th Guards Rifle Division on 31 December. Between 4 and 16 January it fought to recapture Chertkovo and from 25 January to 21 February the division was part of Group Popov, fighting with the latter in 