Key Facts
- Duration
- December 5, 1824 – January 23, 1826
- Length of siege
- Approximately 13.5 months
- Besieged fortress
- Real Felipe Fortress, Callao
- Strategic significance
- Last Spanish stronghold in South America
Strategic Narrative Overview
Beginning on December 5, 1824, the Patriot forces encircled the Real Felipe Fortress, cutting off the royalist garrison. The defenders, rejecting capitulation, endured a prolonged blockade that stretched over thirteen months. Despite their isolation following Ayacucho, the royalists held out through considerable hardship, making the siege the longest of its kind on the Pacific coast during the Spanish American wars of independence.
01 / The Origins
Following the decisive Patriot victory at the Battle of Ayacucho in December 1824, which effectively ended Spanish military power in Peru, a royalist garrison at the Real Felipe Fortress in Callao refused to surrender or accept the capitulation terms. This defiance by the remaining loyalist troops prompted combined Gran Colombian and Peruvian independence forces to lay siege to the port, seeking to extinguish the last significant Spanish foothold on the South American continent.
03 / The Outcome
The royalist garrison finally capitulated on January 23, 1826, when the fortress fell to the Patriot besiegers. This defeat ended the Spanish Empire's military presence in South America entirely. The fall of Callao completed the liberation of Peru and symbolically closed the continental phase of the Spanish American independence wars, removing the last vestige of Spanish colonial military authority from the South American mainland.
Belligerents & Mobilization Analysis
Side A
2 belligerents
Side B
1 belligerent
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.