Once mules were an important object of the trade, and those who dealt in them and drove them across to the river on the Trail met with many mishaps; frequently whole droves, containing from three to five hundred, were stolen by the savages en route. The latter soon learned that it was a very easy thing to stampede a caravan of mules, for, once panic-stricken, it is impossible to restrain them, and the Indians having started them kept them in a state of rampant excitement by their blood-curdling yells, until they had driven them miles beyond the Trail. A story is told of a small band of twelve men, who, while encamped on the Cimarron River, in 1826, with but four serviceable guns among them, were visited by a party of Indians, believed to be Arapahoes, who made at first strong demonstrations of friendship and good-will. Observing the defenceless condition of the traders, they went away, but soon returned about thirty strong, each provided with a lasso, and all on foot. The chief then began by informing the Americans that his men were tired of walking, and must have horses. Thinking it folly to offer any resistance, the terrified traders told them if one animal apiece would satisfy them, to go and catch them. This they soon did; but finding their request so easily complied with, the Indians held a little parley together, which resulted in a new demand for more--they must have two apiece! "Well, catch them!" was the acquiescent reply of the unfortunate band; upon which the savages mounted those they had already secured, and, swinging their lassos over their heads, plunged among the stock with a furious yell, and drove off the entire caballada of nearly five hundred head of horses, mules, and asses. In 1829 the Indians of the plains became such a terror to the caravans crossing to Santa Fe, that the United States government, upon petition of the traders, ordered three companies of infantry and one of riflemen, under command of Major Bennet Riley, to escort the annual caravan, which that year started from the town of Franklin, Missouri, then the eastern terminus of the Santa Fe trade, as far as Chouteau's Island, on the Arkansas, which marked the boundary between the United States and Mexico.[16] The caravan started from the island across the dreary route unaccompanied by any troops, but had progressed only a few miles when it was attacked by a band of Kiowas, then one of the most cruel and bloodthirsty tribes on the plains.[17] This escort, commanded by Major Riley, and another under Captain Wharton, composed of only sixty dragoons, five years later, were the sole protection ever given by the government until 1843, when Captain Philip St. George Cooke again accompanied two large caravans to the same point on the Arkansas as did Major Riley fourteen years before.