The contest was kept up until nightfall, without forcing Valencia’s intrenchment. General Pierce remained in the saddle until eleven o’clock at night. Finding himself, at nine o’clock, the senior officer in the field, he, in that capacity, withdrew the troops from their advanced position, and concentrated them at the point where they were to pass the night. At eleven, beneath a torrent of rain, destitute of a tent or other protection, and without food or refreshment, he lay down on an ammunition wagon, but was prevented by the pain of his injuries, especially that of his wounded knee, from finding any repose. At one o’clock came orders from General Scott to put the brigade into a new position, in front of the enemy’s works, preparatory to taking part in the contemplated operations of the next morning. During the night, the troops appointed for that service, under Riley, Shields, Smith, and Cadwallader, had occupied the villages and roads between Valencia’s position and the city; so that, with daylight, the commanding general’s scheme of the battle was ready to be carried out, as it had originally existed in his mind. At daylight, accordingly, Valencia’s intrenched camp was assaulted. General Pierce was soon in the saddle at the head of his brigade, which retained its position in front, thus serving to attract the enemy’s attention, and divert him from the true point of attack. The camp was stormed in the rear by the American troops, led on by Riley, Cadwallader, and Dimmick; and in the short space of seventeen minutes it had fallen into the hands of the assailants, together with a multitude of prisoners. The remnant of the routed enemy fled towards Churubusco. As Pierce led his brigade in pursuit, crossing the battle-field, and passing through the works that had just been stormed, he found the road and adjacent fields everywhere strewn with the dead and dying. The pursuit was continued until one o’clock, when the foremost of the Americans arrived in front of the strong Mexican positions at Churubusco and San Antonio, where Santa Alma’s army had been compelled to make a stand, and where the great conflict of the day commenced.