"Chapaev" is the most popular film of the Soviet era. Directed by Georgi and Sergei Vasilev, it tells of the legendary exploits of the Red Army Commander Vasili Ivanovich Chapaev during the Russian Civil War. Its greatest fan was Joseph Stalin, who saw it 38 times at late-night showings in the Kremlin. It was both praised by Party ideologues for its faithfulness to the Bolshevik cause and loved by mass audiences for its adventure sequences and its...