 Complete the following phrase:  Serving as deputy commander-in-chief of the Steppe Front for cavalry from July, Konstantinov took command of the 7th Guards Cavalry Corps in October. He led the corps for the rest of the war, a period in which it fought as part of the 65th, 61st, 47th, and 69th Armies of the Belorussian, 1st and 2nd Belorussian Fronts in the GomelRechitsa, Polesskoe, 