 Complete the following phrase:  After the beginning of the German invasion of the Soviet Union, Operation Barbarossa, on 22 June 1941, Nikitin led the corps in the Battle of BiałystokMinsk as part of the Western Front. The corps fought in the area of Pukhovichy, on the Berezina River, and north of Bobruisk. After the corps lost all its tanks in an unsuccessful counterattack, it retreated to Mogilev, whose garrison Nikitin commanded during the 