it certain that the mule path could be made practicable for artillery, and General Scott at once determined to gain the San Angel road, and then move round to the attack of San Antonio in rear.
As soon as it became known that the American army had changed their course, and were proceeding south of Lake Chalco, to reach the Acapulco road, Santa Anna moved the greater part of his forces to the San Antonio causeway and its vicinity. The works at San Antonio were garrisoned with 3,000 men. Eight guns were mounted in the tête du pont at the Puente del Rosario, the fortified bridge near Churubusco. A strong fieldwork was thrown up around the southern front and angles of the stone church of San Pablo, from three to four hundred yards to the right and front of the tête du pont. This work, which was also surrounded by a high wall, commanded the San Angel road, and a cross-road extending about half a mile to the south, where it intersected a similar road leading from the San Angel road to the San Antonio causeway. Seven guns were placed in battery at San Pablo, the garrison of which was commanded by General Rincon. General Valencia was posted on the San Angel road with 7,000 men, said to have been "the flower of the Mexican army," and twenty-four pieces of artillery, half of which were of heavy calibre. Santa Anna remained near Coyoacan, with the main body, between twelve and fourteen thousand strong, and General Perez, in command of the reserve, occupied the hacienda of Portales, three-fourths of a mile in rear of Churubusco, 0n the San Antonio causeway. In the morning of the 18th of August, General Valencia was directed to fall back on Coyoacan; but in violation of his orders, as subsequently stated by
