| Siege of Fort Pilar Zamboanga Revolution | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Part of the Philippine Revolution | |||||||||
 Entrance of Fort Pilar (Present Day) | |||||||||
| |||||||||
| 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 | ||||||||
.svg)  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.