Construction of barricades and digging of trenches by the inhabitants of Madrid. The bombing of the city by Franco aircraft, residents flee to the bomb shelter, killed in the streets, wounded in the hospital. Fighters of the international brigades on the street of the city. Seeing the soldiers of the Republican Army to the front, rally, speech by Dolores Ibarruri. Combat operations of the Republican troops and volunteers against the Francoists; parade of women warriors; training volunteers. General Franco's troops parade. Lesson at school; people on the streets of Madrid. Military foreign ships in the port.