 Complete the following phrase:  At the beginning of the Great Patriotic War he headed the Armoured Automobiles department in the General Staff, and later became the commander of the armored and mechanized divisions in the 16th Army, under General Rokossovsky. As such, he took part in the battle of Moscow. Oriol remained the commander of Rokossovskys tanks, and headed the Mechanized and Armored Formations of the Bryansk Front, which later was re-formed as the Don Front. While stationed in the Don Front, he participated in the 