Siege of Zamboanga

Siege of Fort Pilar
Zamboanga Revolution
Part of the Philippine Revolution

Entrance of Fort Pilar (Present Day)
DateMay 18, 1898
Location
Town of Zamboanga
6°55′0.001″N 122°4′59.999″E / 6.91666694°N 122.08333306°E / 6.91666694; 122.08333306
Result Zamboangueño Victory
Territorial
changes
Republic of Zamboanga was established after siege
Belligerents
Katipunan
* Mindanao Region
Zamboangueño revolutionary forces
Spanish Empire
Commanders and leaders
Vicente Alvarez Diego de los Ríos 
Strength
8,000 men 700 soldiers
Casualties and losses
Unknown Entire force
Location within Philippines
Siege of Zamboanga (Southeast Asia)

The siege of Fort Pilar was fought between April and May 1898 on then-town of Zamboanga in Mindanao as a part of the Philippine Revolution. One of the only few actions against Spanish colonials forces in Mindanao, the victory brought about by the Zamboangueño Ethnolinguistic Nation, after their capture of Fort Pilar several weeks later, paved way for the foundation of the short-lived Republic of Zamboanga.