Plenty of ammunition and an adequate store of provisions were accumulated. General Requena labored indefatigably in repairing discarded cannon, and about forty guns were found available. American deserters, who either had been or had become skilful gunners, were on hand to point some of them. There was one capital, underlying defect in the whole plan of defence. To hold all the works firmly required a much larger garrison than Ampudia had. More or less clearly the mistake was understood; but the active coöperation of the cavalry and the reserves was expected to offset it.[11.17] Santa Anna's policy was not merely to give up indefensible towns, and he ordered Ampudia to drive away all cattle that the Americans might otherwise obtain, destroy provisions and make the water supply useless whenever a place had to be abandoned, besides urging the inhabitants to leave their homes on Taylor's approach, so as to show the Americans and the world that Mexico could never be subdued; and Ampudia not only endeavored to execute these instructions, but adopted measures of his own to supplement the efforts of his troops. The people were ordered to intercept messengers and convoys, capture small parties, and in every possible way imitate the royalists of Spain, who had made the soldiers of Napoleon so much trouble. Martial law went into effect, and thus in addition to other advantages the authority of the indifferent or disloyal governor was obliterated.[11.18] Disloyalty and indifference among the people were combated at the same time, as Ampudia informed the government, by a twofold policy of "moderation" and "decisive energy," in which the second ingredient appeared the more conspicuous. All the citizens of the region received a summons to come and help defend the nation. Notice was publicly given that any person voluntarily affording the enemy direct or indirect aid would be shot; everybody was required to denounce offences of this kind; and all authorities were ordered to inflict the penalty. A circular in English inviting Americans to desert met our troops, and the inhabitants were directed to succor and protect all such repentant foes. Taylor had but a few regulars, Ampudia proclaimed, and the rest of his army was "a mob of adventurers without valor or discipline." Moreover the sacred cause of independence itself appealed for support, and could not be ignored. "Soldiers," he cried, "Victory or death must be our only motto." Thanks to this vigorous policy and the increased numbers of the army at Monterey, by the middle of September the temper of the people towards the Americans noticeably changed.[11.19] [AMPUDIA UNDER A CLOUD]