 Complete the following phrase:  Arapov graduated from the academy in October 1941, after the German invasion of the Soviet Union, and became assistant chief of the 1st Separate Staff Operations Department of the 50th Army, part of the Bryansk Front and from November part of the Western Front. He participated in the Battle of Moscow and the defense of Tula and Plavsk. In the defenses of the two cities, Arapov was reported by his superiors to have skillfully coordinated the operations of the combat units. During the battle for Tula, as the representative of the army staff, Arapov skillfully combined his personal courage with the ability to manage the troops, ensuing the fulfillment of orders. During the 