turned to his post; and in the evening, on learning from the experts that four other paths — one of them available for artillery — led from San Agustín to San Angel, he summarized the reconnaissances in a letter to Santa Anna, complaining that he had neither room to manoeuvre nor time to fortify where he was, asking leave to change his position, and calling for 2000 more men.[1]
The next day, Wednesday, the eighteenth, Santa Anna, writing back that Scott intended to attack San Antonio, ordered Valencia to place his troops at Coyoacán, and send his artillery to Churubusco, a mile farther east. Valencia, — who by this time had placed a strong outpost on the mule-path and sappers on the rounded hill, replied that Scott, striking both at San Antonio and at San Angel, would push his thrust in whichever direction he should find the easier, and that he could not conscientiously leave the second point unguarded by obeying those orders. Notes worthy of the most finished and effusive pirates were then exchanged; and in the end Santa Anna, who longed to remove his insubordinate general but dared not, authorized him to do as he pleased and assume, of course, the attendant responsibility.[2] Accordingly on Thursday morning Valencia advanced with trumpets, drums and flags to the rounded hill, and proceeded to array his forces. A long, low, earthen parapet with an angle at the southern end already faced Padierna, and five guns were in battery; but the summit of the hill was neglected.[3]
During this time the Americans were not inactive. Early on Wednesday Scott directed Worth and Engineers Mason and Tower, supported by Garland's brigade of infantry and a body of dragoons, to reconnoitre San Antonio.[4] The task was accomplished boldly and thoroughly; and they found the place heavily defended, not only in the vicinity of the white castle which formed the headquarters of the hacienda, but for a long distance eastward — where, moreover, the water-soaked ground almost forbade approach — and saw countless laborers toiling hard upon the works. The presence of at least one 24-pounder was demonstrated, and other heavy cannon were believed to be there. In Worth's opinion, the cost of making a successful assault by the narrow, gun-swept causeway with fascines and ladders would cripple the army.[5]
