Republican Militia guards killed over a thousand prisoners in the " Massacre of Paracuellos " , during the Battle of Madrid , in the area around San Jose , in the municipality of Paracuellos de Jarama , and Soto Aldovea , within the boundary of Torrejón de Ardoz . They are commemorated by a large white cross on the slopes of the Cerro de San Miguel , near the river Jarama and visible from the airport of Madrid-Barajas
Massacre of Paracuellos
Paracuellos massacres
Symbols of Francoism