City of Madrid. Positions of the 12th International Brigade in the Casa de Campo Park. At the command post, the brigade commissar Gustav Regler, the head of the operational department of the headquarters, Major Herrasi, the commander of the Franco-Belgian battalion, Major Bernard, the adjutant of General Lukach - A.V. Esner. Combat action. Soldiers in the trenches during the hours of rest. The battery commander M. Cristobal gives the command.