Scott, for his part, left San Agustín before he knew how Smith's plan had worked out, met the news on the pedregal, kept on to San Angel, and near that place, amid tumultuous cheering, took command of Pillow's and Twiggs's divisions.[26.13] The road to Mexico by way of Tacubaya lay open, but he could not move now in that direction and leave Worth, Quitman, the artillery, the baggage, the stores and the sick to join him as best they could, exposed--as it was believed--to some 25,000 Mexicans. The first needful step was to capture San Antonio and reunite his army. Worth had already been directed, after the rout of Valencia became known, to attack and also turn that position whenever he should learn that Pillow and Twiggs had gained its rear; and as a cross-road led from San Antonio to Coyoacán, Coyoacán was the proper point of concentration. Scott therefore went there with his troops, and sent Lee, strongly escorted by dragoons and Mounted Rifles, to reconnoitre the enemy and give the preconcerted signal for Worth's advance. Further to assist that general, Pillow with Cadwalader's brigade was now ordered down the cross-road.[26.14] [Illustration: The Tête de Pont, Churubusco] [THE BATTLE OF CHURUBUSCO] Worth did not, however, wait for assistance. At about eleven o'clock he sent Colonel Clarke's brigade--the Fifth, Sixth and Eighth Infantry--and Brevet Colonel C. F. Smith's battalion from Cuapa to turn San Antonio by the path on the left hand and cut off retreat, and placed Garland, accompanied by Duncan's battery, in a somewhat sheltered spot, as near as possible to the fortifications, with orders to advance on hearing the other brigade at work. Clarke's tortuous path seemed to be three miles long, and as it lay for two thirds of the distance in the pedregal, where the troops had to slide and scramble in single file, two hours were occupied in the march. The Mexicans, therefore, warned by seeing this movement--which they vainly attempted to check--as well as ordered by Santa Anna to retire, made the utmost efforts, after spiking some of their guns, to escape with the rest of them. But the garrison of San Antonio and the neighboring fortifications, which consisted of the Hidalgo and Victoria battalions of Mexico and some other militia, were wholly unfitted to execute a difficult retreat in the face of the enemy. Not far from its middle Clarke struck their column; and while the first part, led by General Bravo, kept on toward Churubusco bridge, the second broke up and scattered.[26.15]