 He began an expedition against the Moros under Datu Uto in Mindanao in 1885, and led an all-out war in pursuit of the Moro leader by 1887.The Moros became insurgent when a famine struck Mindanao in 1872, and their Christianization proved troublesome for his administration.He was able to destroy a number of forts in Cotabato and gain for the Spanish flag Sarangani Bay by June 1886.