couple of good Soviet films on the revolution and civil war - both based in the Ukraine are Askoldov's 'The Commissar' and the Hungarian film maker, Miklos Jancso, "The Red and the White", both quite superb on the horrors and madness of the war. Both had long periods of being banned by the Soviet authorities.
If you're interested in the war and its aftermath in Central Asia, there is a large tradition of Soviet 'Easterns', often quite deliberately modelled on some of the motifs in the Hollywood westerns (some one betrays their comrades, realises their error, atones at the end etc), but the better ones really capture the sense of time and place. The USSR was still churning these out in 1991.