In 1898, in an era of racial terror at home and imperial conquest abroad, the United States sent its troops to suppress the Filipino struggle for independence, including three regiments of the famed African American "Buffalo Soldiers." Among them was David Fagen, a twenty-year-old private in the Twenty-Fourth Infantry, who deserted to join the Filipino guerrillas. He led daring assaults and ambushes against his former comrades and commanders-who relentlessly...