This entrance to the city had been included in the general scheme of defence, but on account of its remoteness from pressing danger few workmen had been employed here; and when Chapultepec fell, it lay entirely open except for a small parapet without a ditch extending partly across the highway some 250 yards to the west. General Peña, however, coming this way from Chapultepec, stopped at the parapet, and Rangel placed at the garita such troops as he could assemble. Santa Anna, who displayed on this occasion reckless valor and an almost fiendish activity, sent three available cannon and brought additional troops. The roofs of buildings in the vicinity were occupied. A redoubt with embrasures was hastily erected at the garita, the near arches of the aqueduct were stopped up with sand-bags, and some guns in the Paseo were prepared to coöperate.[28.20] On attempting to advance, therefore, Worth found the highway swept with bullets, canister, grape and shells. Garland, however, was ordered to creep forward under the protection of the arches, and endeavor to reach the south flank of the garita, and Clarke to burrow through the continuous line of buildings on the other side, and strike the northern flank. Lieutenant U. S. Grant, who was reported as acquitting himself at this time "most nobly," waded some ditches with a party of men and a mountain howitzer, and planted the gun on the roof of a church at the right; and Lieutenant Raphael Semmes of the navy performed a similar exploit on the left. Artillery fire compelled Peña, who--reinforced by Santa Anna with two companies of the Eleventh Infantry--was fighting gallantly, to leave the parapet; and Hunt, of Duncan's battery, though he lost more than half his men in dashing 150 yards at full speed, landed a gun at that point, where he could load in safety and then fire from the one embrasure.[28.20] By five o'clock these preparations were complete. On the other hand Rangel had been severely wounded, and his principal gun, a 24-pound howitzer, had become unserviceable. Suddenly, to his utter astonishment, Americans appeared on the top of a three-story house that commanded the interior of his redoubt, and with a single volley disposed of almost every gunner and artillery mule. Then some of them hurried down to the front door of the house, burst it open, and rushed into the redoubt, where they met Americans just arrived by a flanking movement from the other side of the highway. In a panic the Mexicans fled, literally sweeping away Santa Anna and a body of troops, who had come at all speed from Belén to support the position. Many of them scattered, but with no little difficulty others were conducted to the citadel. By six o'clock Worth entered Mexico. Near the garita his forces were safely housed, and by way of "good-night" and good advice, Huger dropped a few shells in the vicinity of the palace.[28.20]