"Headquarters of the Army, Jalapa, April 23, 1847.
"Sir: In forwarding the reports of commanders which detail the operations of their several corps against the Mexican lines at Cerro Gordo, I shall present, in continuation of my former report, but an outline of the affair; and while adopting heartily their commendations of the ardor and efficiency of individuals, I shall mention by name only those who figure prominently, or, from position, could not be included in those subreports. The field sketch herewith indicates the position of the two armies. The tierra caliente, or low level, terminates at Plan del Rio, the site of the American camp, from which the road ascends immediately in a long circle among the lofty hills, whose commanding points had all been fortified and garrisoned by the enemy. His right, intrenched, rested on a precipice overhanging an impassable ravine that forms the bed of the stream; and his intrenchments extended continuously to the road, in which was placed a formidable battery. On the other side the lofty and difficult heights of Cerro Gordo commanded the approaches in all directions. The main body of the Mexican army was encamped on level ground, with a battery of five pieces, half a mile in rear of that height toward Jalapa. Resolving, if possible, to turn the enemy's left and attack in rear while menacing or engaging his front, I caused daily reconnoissances to be pushed, with the view of finding a route for a force to debouch on the Jalapa road and cut off retreat. The reconnoissance, begun by Lieutenant Beauregard, was continued by Captain Lee, engineers, and a road made along difficult slopes and over chasms out of the enemy's view; though reached by his fire when discovered, until, arriving at the Mexican lines, further reconnoissance became impossible without action. The desired point of debouchure, the Jalapa road, was not therefore reached, though believed to be within easy distance; and to gain that point it now became necessary to carry the heights of Cerro Gordo. The disposition in my plan of battle—General Orders No. 111, heretofore inclosed—were accordingly made. Twiggs's division, re-enforced by Shields's brigade of volunteers, was thrown into position on the 17th, and was of necessity drawn into action in taking up the ground for its bivouac, and the opposing height for our heavy battery. It will be seen that many of our officers and men were killed or wounded in this sharp combat, handsomely commenced by a company of the Seventh Infantry under Brevet First-Lieutenant Gardner, who is highly praised by all his commanders for signal services. Colonel Harvey, coming up with the Rifle Regiment and First Artillery (also parts of his brigade), brushed away the enemy and occupied the height, on which, in the night, was placed a battery of one twenty-four pounder and two twenty-four-pound howitzers, under the supervision of Captain Lee, engineers, and Lieutenant Hagner, ordnance. These guns opened next morning, and were served with effect by Captain Steptoe and Lieutenant Brown, Third Artillery, Lieutenant Hagner (ordnance), and Lieutenant Seymore, First Artillery. The same night, with extreme toil and difficulty, under the superintendence of Lieutenant Tower, engineer, and Lieutenant Laidley, ordnance, an eight-inch howitzer was put in position across the river and opposite to the enemy's right battery. A detachment of four companies under Major Burnham, New York volunteers, performed this creditable service, which enabled Lieutenant Ripley, Second Artillery, in charge of the piece, to open a timely fire in that quarter.
"Early on the 18th the columns moved to the general attack, and our success was speedy and decisive. Pillow's brigade assaulting the right of the intrenchments, although compelled to retire, had the effect I have heretofore stated. Twiggs's division, storming the strong and vital point of Cerro Gordo, pierced the center, gained command of all the intrenchments, and cut them off from support. As our infantry (Colonel Riley's brigade) pushed on against the main body of the enemy, the guns of their own fort were rapidly turned to play on that force (under the immediate command of General Santa Anna), who fled in confusion. Shields's brigade, bravely assaulting the left, carried the rear battery (five guns) on the Jalapa road and aided materially in completing the rout of the enemy. The part taken by the remainder of our forces held in reserve to support and pursue has already been noticed. The moment the fate of the day was decided, the cavalry and Taylor's and Wall's field batteries were pushed on toward Jalapa in advance of the pursuing columns of infantry. Twiggs's division and the brigade of Shields (now under Colonel Baker) and Major-General Patterson were sent to take command of them. In the hot pursuit many Mexicans were captured or slain before our men and horses were exhausted by the heat and distance.
"The rout proved to have been complete, the retreating army, except a small body of cavalry, being dispersed and utterly disorganized. The immediate consequences have been our possession of this important city, the abandonment of the works and artillery at La Hoya, the next formidable pass between Vera Cruz and the capital, and the prompt occupation by Worth's division of the fortress of Perote (second only to San Juan de Ulloa), with its extensive armament of sixty-six guns and mortars and its large supply of material. To General Worth's report, annexed, I refer for details.
"I have heretofore endeavored to do justice to the skill and courage with which the heights of Cerro Gordo were attacked, naming the regiments most distinguished, and their-commanders, under the lead of Colonel Harney. Lieutenant G.W. Smith led the engineer company as part of the storming force, and is noticed with distinction. The reports of this assault make favorable mention of many in which I can well concur, having, witnessed the daring advance and perfect steadiness of the whole. Besides those already named, Lieutenant Brooks, Third Infantry, Lieutenant Macdonald, Second Dragoons, Lieutenant Vandorn, Seventh Infantry (all acting staff officers), Captain Magruder, First Artillery, and Lieutenant Gardner, Seventh Infantry, seem to have won special praise. Colonel Riley's brigade and Talcott's rocket and howitzer battery were engaged in and about the heights and bore an active part. The brigade so gallantly led by General Shields, and after his fall by Colonel Baker, deserves high commendation for its fine behavior and success. Colonels Foreman, Burnett, and Major Harris commanded the regiments. Lieutenant Hammond, Third Artillery, and Lieutenant Davis, Illinois volunteers, constituted the brigade staff. These operations, hid from my view by intervening hills, were not fully known when my first report was hastily written. Brigadier-General Twiggs, who was in immediate command of all advanced forces, has earned high credit by his judgment, skill, and energy. The conduct of Colonels Campbell, Haskell, and Wynkoop, commanding the regiments of Pillow's brigade, is reported in terms of strong approbation by Major-General Patterson. I recommend for a commission Quartermaster-Sergeant Henry, of the Seventh Infantry (already known to the army for intrepidity on former occasions), who hauled down the national standard of the Mexican fort. In expressing my indebtedness for able assistance—to Lieutenant-Colonel Hitchcock, acting inspector general; to Majors Smith and Turnbull, and respective chiefs of engineers and topographical engineers; to their assistant lieutenants, Lieutenants Mason, Beauregard, Stevens, Tower, G.W. Smith, McClellan, engineers, and Lieutenants Derby and Hardcastle, topographical engineers; to Captain Allen, chief quartermaster, and Lieutenant Blair, chief commissary, and to Lieutenants Hagner and Laidley, ordnance, all actively employed—I am compelled to make special mention of the services of Captain R.E. Lee, engineers. This officer greatly distinguished himself at the siege of Vera Cruz, was again indefatigable during these operations, in reconnoissance as daring as laborious, and of the utmost value. Nor was he less conspicuous in planting batteries and in conducting columns to their stations under the heavy fire of the enemy. My personal staff—Lieutenants Scott, Williams, and Lay, and Major Van Buren, who volunteered for the occasion—gave me zealous and efficient assistance. Our whole force present in action and in reserve was eight thousand five hundred. The enemy is estimated at twelve thousand or more. About three thousand prisoners, four or five thousand stands of arms, and forty-three pieces of artillery are taken. By the accompanying return I regret to find our loss more severe than at first supposed, amounting in the two days to thirty-three officers and three hundred and ninety-eight men—in all, four hundred and thirty-one, of whom sixty-three were killed. The enemy's loss is computed to be from one thousand to one thousand two hundred. I am happy in communicating strong hopes of the recovery of the gallant General Shields, who is so much improved as to have been brought to this place.
"Appended to this report are the following papers:
"(A) General return by name of killed and wounded.
"(B) Copies of report of Lieutenant-Colonel Hitchcock, acting inspector general (of prisoners taken), and accompanying papers.
"(C) Report of Brigadier-General Twiggs, and subreports.