Irkutsk city. Communist subbotnik. Workers, Red Army soldiers unload freight cars, dismantle debris on the railroad tracks. Pontoon bridge over the Angara. The city of Verkhneudinsk (Ulan-Ude). Solemn meeting of the Red Army units. Writer V. Yazvitsky and film director T. Armatov. Garage of the automobile battalion of the 35th division. Checking cars.