Why did Filipino insurrection against the U.S. take the form of guerrilla warfare rather than all out war?

The Filipino insurrection against the U.S. took the form of guerrilla warfare due to the disparity in military resources between the two sides. The Filipinos utilized guerrilla tactics to counter the superior firepower and resources of the U.S. military, allowing them to negate the technological advantages of their opponents and fight a prolonged resistance campaign. Additionally, the challenging terrain and the support of local communities made guerrilla warfare a more effective strategy for the Filipino insurgents.