BATTLES OF AUG. 20, 1847 GENERAL PLAN

[Larger image]

To increase his confidence, troops not only occupied Mexicaltzingo on the left, but in even stronger force guarded the opposite flank. About three miles toward the south from San Cosme, the western garita of Mexico, the traveller, passing the fortified hill of Chapultepec on the right, found himself at the genial suburb of Tacubaya. Keeping on in the same general direction for nearly six miles and traversing Mixcoac at about half-way, one came to San Angel, a pretty but narrow town of some importance on the skirt of the foothills. Two miles from here toward the east at Coyoacán, a garden spot loved by Cortez and Alvarado, the fine brigade of Pérez, which consisted of about 3500 infantry, was now placed; and at San Angel itself a high military officer, followed by some 5500 troops[2] from Guadalupe, drove up in a coach about noon on Tuesday, the seventeenth of August. The man was of average height but unusually broad, with a bull-neck deep in his shoulders, as if some person had tried to force a good idea into his head with a pile-driver, a hard, cruel, domineering look about his blue eyes, small side-whiskers, and a heavy mustache. It was Valencia, whose imputed schemes and intrigues had of late been keeping every tongue busy.[4]

VALENCIA’S MOVEMENTS

Valencia’s instructions were to block the way from Coyoacán to Tacubaya with men and works; but he mounted at once, rode on south by the turnpike, passed Ansaldo—a farmhouse buried in its orchard, two miles and a half or so from San Angel—and a strong half-mile beyond it paused. On his right, open ground sloped gradually back into a rounded hill, some three or four hundred yards from the road; and below him on the left flowed a small but lively stream at the bottom of a deep, wide ravine, near the opposite side of which stood the adobe buildings of Padierna farm.[4]

From this point a mule-path, barely practicable for horses, wriggled off in the direction of San Agustín, here about four miles distant in a straight line; and—covering the whole intermediate plain from San Antonio and San Agustín on the one side to Padierna and San Angel on the other, from Coyoacán on the north to the mountains on the south—extended a pedregal or lava bed, which looked as if a raging sea of molten rock had instantly congealed, had then been filled by the storms of centuries with fissures, caves, jagged points and lurking pitfalls, and finally had been decorated with occasional stunted trees and clumps of bushes. After pursuing the mule-path for some distance, ordering a camp and batteries established on the slope of the rounded hill, and instructing experts to reconnoitre the ground thoroughly, Valencia returned 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.[4]

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.[3] 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.[4]

SCOTT FEELS HIS WAY

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.[5] 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.[6]