Founding of a Spanish Post at Zamboanga.--This brings us to a new phase in the Moro wars. The governor, Juan Cerezo de Salamanca, was determined upon the conquest and the occupation of Mindanao and Jolo. In taking this step, Salamanca, like Corcuera, who succeeded him, acted under the influence of the Jesuits. Their missions in Bohol and northern Mindanao made them ambitious to reserve for the ministrations of their society all lands that were conquered and occupied, south of the Bisayas. The Jesuits were the missionaries on Ternate and Siao and wherever in the Moluccas and Celebes the Spanish and Portuguese had established their power. The Jesuits had accompanied the expedition of Rodriguez de Figueroa in 1595, and from that date they never ceased petitioning the government for a military occupation of these islands and for their own return, as the missionaries of these regions. The Jesuits were brilliant and able administrators. For men of their ambition, Mindanao, with its rich soil, attractive productions, and comparatively numerous populations, was a most enticing field for the establishment of such a theocratic commonwealth as the Jesuits had created and administered in America. [69] On the other hand, the occupation of Zamboanga was strenuously opposed by the other religious orders; but the Jesuits, ever remarkable for their ascendancy in affairs of state, were able to effect the establishment of Zamboanga, though they could not prevent its abandonment a quarter of a century later. Erection of the Forts.--The presidio was founded in 1635, by a force under Don Juan de Chaves. His army consisted of three hundred Spaniards and one thousand Bisaya, The end of the peninsula was swept of Moro inhabitants and their towns destroyed by fire. In June the foundations of the stone fort were laid under the direction of the Jesuit, Father Vera, who is described as being experienced in military engineering and architecture. To supply the new site with water, a ditch was built from the river Tumaga, a distance of six or seven miles, which brought a copious stream to the very walls of the fort. The advantage or failure of this expensive fortress is very hard to determine. Its planting was a partisan measure, and it was always subject to partisan praise and partisan blame. Sometimes it seemed to have checked the Moros and sometimes seemed only to be stirring them to fresh anger and aggression. The same year that saw the establishment of Zamboanga, Hortado de Corcuera became governor of the Philippines. He was much under the influence of the Jesuits and confirmed their policy of conquest.