Spain. City of Madrid. Streets, buildings, landmarks. Transport, pedestrian traffic. Youth in the classroom for physical education, military affairs. May Day slogans, posters on buildings. Bombing, burning buildings. Ambulance movement. Residents go down to the bomb shelter, with children, things on the street. Destruction, ruins. Help to the victims. Work in a sewing workshop. Units of the Republican Army and international brigades are passing through the streets of Madrid. Parade of one of the divisions. Delegation of workers at the front. International brigade in the trenches.