Siege of the Montaña Barracks

Siege of the Montaña Barracks
Part of the Spanish coup of July 1936

Temple of Debod, former location of the barracks
Date18–20 July 1936 (1936-07-18 1936-07-20)
Location
Result Republican victory
Belligerents
 Nationalist Spain  Spanish Republic
Commanders and leaders
  • Joaquín Fanjul Goñi
  • M. García de la Herrán 
  • M. Serra Bartolomé 
Strength
  • 2,000 soldiers
  • 500 falangists
~3,000 security forces
Casualties and losses
200–1,000 killed Unknown

The siege of the Montaña Barracks (Spanish: Sitio del Cuartel de la Montaña) was the two-day siege which marked the initial failure of the July 1936 uprising against the Second Spanish Republic in Madrid, on 18–20 July 1936, at the start of the Spanish Civil War. The bulk of the security forces in Madrid remained loyal to the government, and supported by workers' militias, crushed the uprising.