As the concurrent attack upon the convent favored physically and morally the assault upon the tête-de-pont, so reciprocally, no doubt, the fall of the latter contributed to the capture of the former. The two works were only some four hundred and fifty yards apart; and as soon as we were in possession of the tête-de-pont, a captured four-pounder was turned and fired, first by Captain Larkin Smith, and next by Lieutenant Snelling, both of the 8th Infantry, several times upon the convent. In the same brief interval, Lieutenant-Colonel Duncan (also of Worth's division) gallantly brought two of his guns to bear at a short range from the San Antonio road, upon the principal face of the work and on the tower of the church, which in the obstinate contest, had been often refilled with some of the best sharpshooters of the enemy.
Finally, twenty minutes after the tête-de-pont had been carried by Worth and Pillow, and at the end of a desperate conflict of two hours and a half, the church or convent, the citadel of the strong line of defence along the rivulet of Churubusco, yielded to Twiggs' division, and threw out on all sides signals of surrender. The white flags, however, were not exhibited until the moment when the 3d Infantry, under Captain Alexander, had cleared the way by fire and bayonet, and had entered the work. Captain I. M. Smith and Lieutenant O. L. Shepherd, both of that regiment, with their companies, had the glory of leading the assault. The former received the surrender, and Captain Alexander instantly hung out from the balcony the colors of the gallant 3d. Major Dimick, with a part of the 1st Artillery, serving as infantry, entered nearly abreast with the leading troops.
Captain Taylor's field battery, attached to Twiggs' division, opened its effective fire at an early moment upon the outworks of the convent and the tower of its church. Exposed to the severest fire of the enemy, the captain, his officers and men, won universal admiration; but at length, much disabled in men and horses, the battery was by superior orders withdrawn from the action thirty minutes before the surrender of the convent.
Those corps, excepting Taylor's battery, belonged to the brigade of Brigadier-General P. F. Smith, who closely directed the whole attack with his habitual coolness and ability: while Riley's brigade, the 2d and 7th Infantry, under Captain T. Morris and Lieutenant-Colonel Plympton respectively, vigorously engaged the right of the work and part of its rear. At the moment the Rifles, belonging to Smith's, were detached in support of Brigadier-General Shields on our extreme left, and the 4th Artillery, acting as infantry, under Major Gardner, belonging to Riley's brigade, had been left in charge of the camp, trophies, etc., at Contreras. Twiggs' division at Churubusco had thus been deprived of the services of two of its most gallant and effective regiments.
The immediate results of this victory were: the capture of seven field pieces, some ammunition, one color, three generals, and one thousand two hundred and sixty-one prisoners, including other officers.
Captains E. A. Capron and M. J. Burke, and Lieutenant G. Hoffman, all of the 1st Artillery, and Captain J. W. Anderson and Lieutenant Thomas Easley, both of the 2d Infantry, five officers of great merit, fell gallantly before this work.
The capture of the enemy's citadel was the fourth great achievement of our arms in the same day.
It has been stated that some two hours and a half before, Pierce's, followed closely by the volunteer brigade, both under the command of Brigadier-General Shields, had been dispatched to our left to turn the enemy's works; to prevent the escape of the garrisons and to oppose the extention of the enemy's numerous corps from the rear upon and around our left.
Considering the inferior numbers of the two brigades, the objects of the movement were difficult to accomplish. Hence the re-enforcement (the Rifles, etc.,) sent forward a little later.
In a winding march of a mile around to the right, this temporary division found itself on the edge of an open wet meadow, near the road from San Antonio to the capital, and in the presence of some four thousand of the enemy's infantry, a little in rear of Churubusco, on that road. Establishing the right at a strong building, Shields extended his left parallel to the road, to outflank the enemy toward the capital. But the enemy extending his right, supported by three thousand cavalry, more rapidly (being favored by better ground) in the same direction, Shields concentrated the division about a hamlet and determined to attack in front. The battle was long, hot and varied; but, ultimately, success crowned the zeal and gallantry of our troops, ably directed by their distinguished commander, Brigadier-General Shields. The 9th, 12th and 15th regiments, under Colonel Ransom, Captain Wood, and Colonel Morgan respectively, of Pierce's brigade (Pillow's division), and the New York and South Carolina Volunteers, under Colonels Burnett and Butler respectively, of Shields' own brigade (Quitman's division), together with the mountain howitzer battery, now under Lieutenant Reno of the Ordnance Corps, all shared in the glory of this action, our fifth victory in the same day.