 Complete the following phrase:  Returning to Rzhev, Romanov joined the Red Army there on 5 June and became a company commander in the 4th Karachev Rifle Regiment of the 2nd Tver Rifle Division. The regiment was relocated to Zubtsov in October, where it was reorganized as a special purpose battalion in the 1st Rifle Division; Romanov became head of the battalion school. The battalion was sent to the 