commemorative plaque to José del Castillo

The commemorative plaque to José del Castillo sits quietly on a building façade in central Madrid, one of several hundred markers the city has placed to flag locations tied to notable events and people. Visitors usually stumble on it while wandering the narrow streets of the historic centre, and despite its modest size it points to one of the most consequential nights in twentieth-century Spanish history.

Who was José del Castillo?

Born on 29 June 1901 in Alcalá la Real, in Andalusia, José del Castillo Sáenz de Tejada built his career in the Guardia de Asalto, the republican police corps set up after the proclamation of the Second Spanish Republic in 1931 to keep order in the country's largest cities. He rose to the rank of lieutenant and, alongside his police duties, belonged to a clandestine military network of officers loyal to the republican government who were increasingly alarmed by the mounting threat of a coup against the elected authorities.

Why does this plaque matter?

On 12 July 1936, Castillo was shot dead in Madrid by gunmen tied to far-right paramilitary groups opposed to the Republic. His comrades did not let the killing pass unanswered: that same night they carried out a retaliatory abduction and murder of José Calvo Sotelo, a leading monarchist opposition politician. The two deaths, following one another within hours, are widely regarded as the spark that pushed the plotting generals to move faster — the military uprising broke out just days later, on 17-18 July 1936, opening the Spanish Civil War. During the war a socialist militia battalion carried his name, and a Madrid street was later named after him as well.

Where do plaques like this come from?

This marker belongs to Madrid's Plan Memoria de Madrid, a municipal programme launched in 1990 to record on building façades the events and people connected to each address. Over nearly three decades the city has put up more than 380 such plaques, together forming an open-air, scattered trail through the history of twentieth-century Madrid — spanning the Second Republic, the Civil War, and the decades that followed.

How do you get there?

The plaque stands in central Madrid, in an area well served by metro lines and city buses. Like most Plan Memoria markers, it is fixed to a street-facing façade, so it can be visited at any hour, free of charge, with no booking required. It works best as a stop along a walk through the city centre rather than a destination in its own right — pair it with the nearby squares and historic streets while you are in the area.

What should you know before visiting?

Do not expect a monument or a statue: this is an informational plaque, a small inscribed plate rather than a sculptural memorial. Its real value lies in the history it condenses — a single officer's death that helped tip an entire country toward civil war.

Frequently asked questions

Who was José del Castillo? A lieutenant in the republican Assault Guard, assassinated in Madrid on 12 July 1936 by far-right gunmen.

Why is his death historically significant? His killing triggered the retaliatory murder of José Calvo Sotelo, accelerating the military uprising that began the Spanish Civil War just days later.

Does the plaque mark the exact spot where he died? The plaque commemorates him in central Madrid; check the inscription on site to confirm how the location connects to the specific episode of his life.

Is there an entrance fee? No — Plan Memoria de Madrid plaques are public, mounted on building façades, and accessible free of charge at any time.