Besides, Alvarez with nearly all the Mexican horse was to swing in behind the advancing Americans, cut off their communication with Puebla, follow, annoy and injure them in every possible way, conceal his real strength so as to bring out and overwhelm their cavalry, attack vigorously whenever Scott should become seriously engaged before Mexican fortifications, and be ready to prevent his retreat. Canalizo with his thousands was to support Alvarez; and Valencia also, advancing from Guadalupe Hidalgo to the village of Texcoco, east of Mexico, was to coöperate with him, and especially to throw himself with all his energy into the attack on the American rear or flank, whenever Scott should assail the outer works. At the same time the people of the neighboring towns and villages were to swarm about the invader like hornets, and sting him day and night incessantly. In short the plan was excellent — only Santa Anna overlooked, as usual, several possibilities.[1]
As soon as he took up the reins of government the construction of defences had begun, and now, under the technical direction of General Mora, Manuel Robles and Juan Cano, it was pushed with all the energy of an intense military despot who stuck at nothing. Villages were depopulated, haciendas robbed of their laborers, jails emptied, and the streets cleared of vagabonds. Enforce obedience, the governor of the District was curtly told when he reported that his orders had no effect. Sunset no longer promised repose, and the church bells no longer meant worship. Informed on July 18 that Scott would leave Puebla on the twenty-first, Santa Anna rose above his exemplar, Napoleon, and took for model the Creator. Within eight days let all the works be completed, he decreed. But engineers, laborers, tools, instruments, timber, provisions, time and cash — much of which was embezzled by high officers and officials even at this juncture — all fell short, and Santa Anna's serviceable cannon were not enough to equip even the works constructed.[2]
Certain points, however, became quite formidable, and especially Old Peñón, a lofty, precipitous hill of rock standing by itself, close to the Puebla route, seven miles from the city. Stockades, breastworks, parapets and guns bristled on summit and brow; works at the base and in advance commanded all
