 Isidoro and his soldiers from Guerrero State which was settled by immigrants from the Philippines, inflicted defeat on the royalist army from Spain.Impressed, Itubide joined forces with Guerrero and demanded independence, a constitutional monarchy in Mexico, the continued religious monopoly for the Catholic Church, and equality for Spaniards and those born in Mexico.Royalists who now followed Iturbide's change of sides and insurgents formed the Army of the Three Guarantees.