 Complete the following phrase:  From July 1943, he served as deputy commander of the Air Army, first the 4th Air Army on the North Caucasian Front and from April 1944, the 2nd Air Army on the 1st Ukrainian Front. During this period, he participated in the Novorossiysko-Taman, Kerch-Eltigen, Proskurovsko-Chernivtsi and LvovSandomierz offensives. On August 1944, he was again appointed commander of the 1st Mixed Aviation Corps, which later became the 2nd Guards Assault Aviation Corps on September, of the 2nd Air Army. Under his command, the corps took part in East Carpathian, Vistula-Oder, Lower Silesian, Upper Silesian, 