The conquest of Mindanao and the war in the Moluccas were also subjects of correspondence between the court and the local audiencia. [489] The king, on various occasions, requested information of the oidores concerning the natives and their attitude towards law and order, whether the various tribes were quiet, by nature peaceful or warlike, and what measures, in the opinions of the magistrates, would be best in dealing with them. The audiencia was consulted on other occasions as to the best manner of fortifying the Visayan Islands against the attacks of the Moros, and northern Luzón against the Chinese and Japanese, the possible cost and most suitable locations of fortifications, and their availability and probable value in repelling invasions. The reliance of the governor and the court upon the magistrates of the audiencia for advice in the matter of defense was not characteristic only of the early years of Philippine history. In 1744 Governor Torre submitted his scheme for the fortification of the city of Manila to the audiencia before he sent it to the king for final approval. [490] Torre was aided by a regular council of war (consejo de guerra) of which the oidores were members and he submitted questions relative to the defense of the Islands to this council. In 1746, this local council of war reported on the advisability and feasibility of manufacturing guns and powder in the colony. [491] Governor Obando, writing in 1748 to the king, and commenting on the relationship of the previous governor with the audiencia in the matter of defense, divided between his predecessor and the audiencia the responsibility for the payment of ten thousand pesos to bribe the Dutch to keep away from the city, and not to reduce it. [492] In a subsequent chapter we shall discuss the important part played by the audiencia in the defense and surrender of the Islands to the British in 1762. These incidents, taken at random from various governors' administrations, show that the audiencia was required to do all that it could to assist the governor and captain-general in the defense of the colony. It was also called upon to advise the court on military affairs; thus it was frequently able to assist in formulating and guiding the policies of the home government with regard to defense and military administration. In this way an indirect, but distinct check was placed upon the governor in his own field, and an incapable or radical executive was thus prevented from endangering the peace and security of the colony.