Chapter X (1)

ADVANCE TO MEXICO, EL PEÑON, CONTRERAS,
CHURUBUSCO

The City of Mexico is situated in the centre of an irregular basin some thirty-five miles from north to south and twenty-five miles from east to west, and is separated from the great plain of Puebla by the eastern branch of the great Cordillera of Anahuac, interposing an elevation of nineteen hundred feet at the Pass of the Rio Frio.

It was known from information collected by the engineers that the city was entirely surrounded either by an inundation or by marshy ground, and was approached by eight causeways, flanked with wet ditches, and provided with numerous cuts; that the whole city was protected by a double and in some quarters by a triple line of defensive works, well armed with cannon, and defended by an army of some thirty thousand men. The direct approach along the great national road was defended by the strong position of the Peñon, seven miles from the city. Chapultepec stood boldly out on the southwest, and on the north there were said to be formidable works at Guadalupe.

After entering the valley along the national road, there were three general modes of approaching the city,--the direct along the national road, around Lake Tezcuco on the north, Chalco and Xochimilco on the south.

All the information collected pointed to the south and west as the proper quarter from whence to attack the city; the south presented an extended front with four of the eight causeways of entrance nearly parallel to each other, and was necessarily weak. On the west the suburb of San Cosme, a single street lined with houses on either side, extended well into the country, and afforded a vulnerable point. Chapultepec, not deemed a very formidable obstacle, required to be swept away to be free to select the point of attack. Hence Tacubaya, a strong village overawing Chapultepec, became the key point of the whole operation. In the particular operation against the southern front, the occupancy of the church and village of Piedad was of the last importance, in view of all the southern gates, communicating directly with all the villages in rear from Tacubaya to San Augustine, and by a good cross road controlling the three causeways of San Antonio, Nino Perdido, and Piedad.

Before ultimately deciding upon the strategic line, General Scott determined to enter the valley at the head of the column, and whilst the rear was closing up, to employ spies and push forward reconnoissances to get accurate information of all the material facts bearing on the plan of operations.

Accordingly, on the 7th of August the division of Twiggs, with the engineer company at its head, led the advance, followed on successive days by Quitman, Worth, and Pillow. General Scott and staff joined the advance on the 8th. On the 11th Twiggs reached Ayotla, fifteen miles from Mexico, Quitman Buena Vista, Worth Rio Frio, Pillow Tesmaluca, respectively 3-1/2 miles, 11-1/2 miles, and 20-1/2 miles in rear.

On the 12th a reconnoissance of the Peñon was made by Captains Lee and Mason and Lieutenant Stevens, the escort consisting of a squadron of the dragoons, Captain Thornton, a section of Taylor's battery, and the 4th artillery,--the whole under the command of Major Gardner. The Peñon was found to be an extensive and commanding position, entirely surrounded by water,--Lake Tezcuco stretching miles to the north. The base of the hill, four hundred feet high, was surrounded by a continuous parallel armed with batteries, and the defenses rose in amphitheatre to the top, which was crowned by a small work. The only causeway of approach was swept by two lines of works, and the defenses of the whole position were formidable. A road branching off from the main road, two miles from the Peñon, and leading to Mexicalcingo, was pursued some two miles, and found to be exceedingly good. The Indians in the neighborhood reported that the road was equally good throughout its whole extent, but that the bridge at Mexicalcingo was broken down.

An amusing incident occurred in the progress of this reconnoissance. Three officers--Major Gaines, of the Kentucky volunteers, Captain Mason and Lieutenant Stevens, of the engineers--approached the causeway some three quarters of a mile in advance of the escort, and advanced towards a group of Mexican officers, some eight or ten in number, who were flourishing their lances and curveting their horses as if to frighten the American officers away. The latter, well mounted, continued their course in a deliberate walk; and when they arrived within about three hundred yards, the valiant Mexicans discharged their pistols, and, finding no effect had been produced upon the American officers, who still continued to advance, they immediately took to flight along the causeway.

In the afternoon Captain Lee and Lieutenant Beauregard reconnoitred the road on the northern shore of Lake Chalco, as far as the causeway between Lakes Chalco and Xochimilco. The causeway was knee-deep in water. The object of the reconnoissance (to get boats) was not effected. During the progress of the reconnoissance of the Peñon the Mexican troops, in expectation of an attack, were brought out from the city in large numbers. Major Smith and Lieutenant Tower, from a hill one thousand feet high, in advance of Ayotla, observed the passage of troops from the city to the Peñon during the progress of this reconnoissance.

On the 3d a minute reconnoissance of the ground between the lakes was made by the engineers, supported by Shields's brigade, who at nine o'clock left camp to block up the Peñon.

Captain Mason, supported by Sibley's dragoons and the rifles, and accompanied by Lieutenants Beauregard and McClellan, examined the position of Mexicalcingo, seven miles from the Peñon, pursuing the road that was partially examined yesterday. This bold movement, almost under the guns of the Peñon, and extremely hazardous in presence of an enterprising enemy, was accomplished in the most successful manner. After arriving at Mexicalcingo the party was joined by Captain Lee and Lieutenant Tower, who, with a squadron of dragoons, had taken the route of the lakes to examine the roads.

Mexicalcingo was found to be a strong position, defended by seven batteries, and entirely surrounded by water and marshy ground.

The Peñon was minutely examined by Lieutenant Stevens, who entered the inundation at several points, and succeeded in examining the whole position, excepting a very inconsiderable portion on the western slope. He entered the lake, and for a whole mile the water did not rise above the fetlocks of his horse. South of the causeway the water was carefully examined to determine the best crossing-place. Two were found where water was not over two feet in depth, and the bottom very hard. The positions of the several batteries and the paths of approach were discovered. The position was even more formidable than it seemed yesterday. Over thirty guns were in position. New batteries were being erected, and stockades on the hill. The whole inundation was swept by powerful batteries. Lieutenant Stevens was engaged seven hours in this reconnoissance, most of the time within twelve hundred yards of the enemy's guns.

We all returned late, much fatigued with our day's work. The general expressed much gratification at the information furnished by the several reconnoissances.

The general has not yet entirely decided upon his course. He listens to everything, weighs everything, and, when he sees his way clear, will act with promptitude. Pillow arrived to-day, and immediately proceeded to Chalco.

August 14. Little was done to-day in the way of reconnoissances. Captain Mason and Lieutenant Beauregard were assigned to duty with the division of General Worth, and joined him at Chalco. Lieutenant Tower commenced a reconnoissance of the lakes, to determine the practicability of transport by water to Mexicalcingo, but did not succeed in getting into the canal of Chalco. In the afternoon Colonel Duncan arrived at general headquarters with the information that the road south of the lakes was practicable. (He had explored ten miles of the road with a column.) Accordingly, the plan of the general to attack Mexicalcingo in front, sending Worth's division around to attack in rear, was abandoned, and it was determined to move the whole army around the lakes.

August 15. Headquarters left Ayotla at eleven, and proceeded to Chalco, Worth pushing from Chalco the same evening, and Quitman entering Chalco. Captain Lee and Lieutenant Tower were assigned to the brigade of Harney for temporary duty with the advance. The engineer company also joined the advance of Worth.

August 16. All the divisions in motion this morning. The road around the lakes was narrow and rough, in many cases passing through a narrow defile on the very edge of the lake, on one side abrupt acclivities, and on the other a quagmire, into which the least false step would plunge one several feet deep.

Headquarters, before reaching the camping-ground of Worth of the previous night, had to pass Quitman's and Pillow's train. On arriving at Chimalpa, headquarters remained some hours for authentic intelligence from Twiggs, it having been reported that in marching out from Ayotla, early in the morning, he had encountered a large force of the enemy under Alvarez. On learning that Taylor's battery, in firing seven rounds, dispersed the large body of enemy's lancers which made a demonstration against Twiggs at the point where the route left the national road to wind round Chalco, headquarters moved forward to Tulancingo, where we passed the night. This village is remarkable for its large and ancient olive groves. The olive-trees on either side of the road, stretching out their arms, form an arch above like the elms of New England.

August 17. Headquarters reached Xochimilco this day with Pillow's and Quitman's divisions, Worth advancing as far as San Augustin, and Twiggs reaching Pillow's camping-ground of last evening. The road to-day was extremely difficult, and required some working to fill up cuts, and remove stones and other obstructions placed in the road. The march was very laborious in consequence of the continual halts.

Early on the morning of the 18th General Scott reached San Augustin, called the engineers, observed, "To-day the enemy may feel us, to-morrow we must feel him," and ordered reconnoissances to determine the best mode of reaching the position of Tacubaya. There were two roads,--the direct by San Antonio, which was already ascertained to be occupied in strength by the enemy, and one to the west passing through Contreras and San Angel, known, however, for a portion of the distance to be simply a mule-path.

Major Smith directed in person the examination of the San Antonio route, assisted by Captain Mason, Lieutenants Stevens and Tower, and Captain Lee that to the west, assisted by Lieutenant Beauregard. The instructions of the general as to reconnoissances had been already anticipated by General Worth as regards the Contreras route, who had pushed his division forward, and dispatched Captain Mason, escorted by Thornton's dragoons, to reconnoitre the enemy's position at San Antonio. Whilst in the discharge of this duty two shots from a battery of the enemy were fired, killing Captain Thornton outright and severely wounding Fitzwater, an interpreter.

General Worth immediately placed his division in the occupancy of the Hacienda Cuapa, thus affording the most ample protection to the escorts of the engineers. Major Smith now ordered Captain Mason and Lieutenant Tower to examine the enemy's right, and Lieutenant Stevens his left.

Captain Mason first went to the steeple of a church near by to determine the best mode of conducting his reconnoissance, and then with Colonel C.F. Smith's light battalion he passed over a field of pedregal to our left, till he got a full view of the rear of the enemy. He traced paths leading to Mexicalcingo, interrogated the peons, and came to the conclusion that the whole position might be turned and the enemy made to abandon it, by crossing an infantry force on the line he had just pursued, and falling upon the enemy at daylight with the bayonet.

Lieutenant Stevens was twice recalled whilst pushing his reconnoissance, first, by order of Colonel Garland in consequence of an apprehended attack from the enemy, and second, by direction of Major Smith, the senior engineer. This officer did not deem it necessary to do anything further, observing to General Worth that he had examined the whole vicinity from the top of the hacienda, and had also interrogated the residents, and was satisfied that the ground was firm on our right, and afforded a route to turn the enemy's position. Lieutenant Stevens expressed doubts as to this, and was permitted to go on with his examination. He persevered until night, and found that the ground was marshy, intersected with canals, and that operations in this direction were not practicable.

In the mean time Captain Lee, with Kearny's dragoons and Graham's 11th infantry, reconnoitred the route by Contreras. At about a mile and a half it became a mule-path, requiring to be worked to be practicable for artillery, and on ascending a hill a mile and a half farther on, a large intrenched camp opened to view at a mile's distance, occupied in strength by the enemy, and completely closing the Contreras route, which for the intervening distance passed through a bed of pedregal, a lava rock of honeycomb projection. After passing the intrenched camp, the road was known to be good. At the hill the party had a successful skirmish with the enemy's pickets, and then returned to San Augustin.

In the afternoon General Scott examined in person the San Antonio front, and at his quarters that evening, after hearing the reports of the engineers, he decided to mask San Antonio, and force the intrenched camp at Contreras. Captain Mason alone of the engineers advocated the forcing of San Antonio.

On the 19th Twiggs's division, on coming up from Xochimilco, was pushed forward to the support of General Pillow, already on his way to furnish parties to work the road. The engineer company, with its tools on the backs of mules, was ordered back from Worth early that morning and assigned to Captain Lee, who, assisted by Lieutenants Beauregard and Tower, located the road and superintended the working parties.

Major Smith, assisted by Lieutenant Stevens, designated the positions to be occupied by the trains and the division of Quitman at San Augustin, now become the general depot and key of operations. Captain Mason continued on duty with Worth in front of San Antonio.

General Twiggs passed the division of Pillow just as the tools of his working parties were being packed away, they being no longer able to work the way in consequence of having come within range of the enemy's batteries; and the engineers, now joined by Major Smith and Lieutenant Stevens from San Augustin, advanced to and entered the pedregal to examine the enemy's position. As observed yesterday by Captain Lee, he was found to be in a strong intrenched camp on the opposite side of a deep ravine, which, with the almost impracticable bed of pedregal that intervened, completely separated the two armies. All the efforts of the engineers, who advanced close to the enemy's pickets, Lieutenant McClellan having his horse shot under him, could discover no other route than the mule-path, completely commanded by the long guns of the intrenched camp. This path wound through the rocks, and afforded at points some little cover for men and guns. The pickets of the enemy were in large force and well pushed forward. In the mean time a heavy cannonade, shells and round-shot, opened from the camp. At this juncture, with the rifles thrown forward as skirmishers, the howitzer battery of Callender and the field battery of Magruder were brought forward to a position indicated by Captain Lee to drive in the pickets and make a bold demonstration, to cover the true and very different movement, indicated by Lieutenant Stevens on returning from the advanced position gained by the engineers under cover of the rifles to communicate Captain Lee's request for the batteries, and before the order to move forward the batteries had been given. This officer (Lieutenant Stevens) observed to Twiggs, the senior officer in front, "The true point of attack is the enemy's left. Attack his left, you cut him off from his reserves and hurl him into the gorges of the mountains." Major Smith expressed similar opinions. Riley was now sent against the enemy's left, and the whole brigade of Smith to cover the demonstration in front. Callender brought his battery into action with extraordinary promptness and efficiency, and pushed it rapidly forward. The heavier guns of Magruder could not be so easily handled, and great delay occurred in getting them into battery; a position was found partially sheltering them, and they were brought into action. Callender was soon severely, and T. Preston Johnston of Magruder's battery mortally wounded. Lieutenant McClellan, who assisted to carry Callender to the rear, now took command of his battery, Lieutenant Reno being at the time detached with the rockets. Lieutenant Foster also, at Captain Magruder's request, took charge of one of his pieces, and when Johnston fell, carried him to the rear. Both these officers distinguished themselves by their exertions in pushing forward the two batteries as well as in serving them.

Riley was still struggling through the pedregal, Lieutenant Tower guiding his brigade, and Cadwallader was sent in the same direction. Smith's brigade, closely followed by Pierce, now came to the front, and entered a cornfield to the left, three companies of the 3d infantry, Captain Craig, being detailed as a guard to the batteries, and Lieutenant Haskin with twenty men to make good Magruder's losses. The fire from the camp--shot, shells, and small-arms--on the front was terrible, and the enemy's pickets advanced in force, threatening the batteries. The leading regiment of Pierce, the 9th infantry, Colonel Ransom, conducted by Lieutenant Stevens, now gallantly dashed forward through the fire that swept the path, crossed a cleared cornfield in direct view of the enemy's battery, pressed from cover to cover, driving clouds of the enemy's skirmishers before them, crossed the rapid stream that ran in the ravine, and gained the opposite bank, within three or four hundred yards of the camp. This important position it maintained till dark, forming with the 12th infantry, the detachments of Craig and Haskin, and scattered bodies of the rifles, the sole force in front; the 15th infantry, Colonel Morgan, having been sent in the trail of Cadwallader immediately on the arrival of the general-in-chief on the ground, and Smith with his brigade following at a later period.

Riley on emerging from the pedregal came upon the village of San Geronimo, through which he swept, and continued to advance in the direction of a ravine that was found to extend to the rear of the camp. In this isolated position he had two successful encounters with the enemy's lancers, killing their general, Frontera, and awaited only the coming up of reinforcements to order the assault. But Cadwallader, not put in motion till Riley was well on his way, had barely time to reach the village and hold it against the reserves of the enemy, estimated at ten thousand men, foot and horse, which now came up from the city under Santa Anna in person. The village, the key to the position, was to be maintained at all hazards. Cadwallader presented a bold front and kept the enemy in check. The arrival of Morgan an hour later, and of Smith towards night, made the position impregnable against an infantry attack.

About sunset Riley returned to the village, and Smith, now senior in command, resolved to attack the reserves, but, dark coming on before his dispositions were made, an attack upon the intrenched camp was resorted to as an alternative.

A dark and stormy night now closed in upon the scene, and the soldiers in their dreary bivouac were placed in readiness for the morrow's work. All thus far had gone on well. Worth in front of San Antonio maintained the front and rear. Smith in the village of San Geronimo held the key of the offensive movement to the enemy's left; his rear, thanks to the pedregal and Pierce, still held in front of the intrenched camp, being safe against attack.

The general-in-chief returned at nightfall to San Augustin. Many bodies of stragglers were to be seen on the field. Even the two commanders of divisions, Pillow and Twiggs, failed in reaching the village, where their commands were in position, and within reach of an overwhelming force. As the fire of our batteries died away and they were withdrawn, cheer on cheer rose from the enemy's extended line. Rain coming on, many bodies of stragglers not being able to find their commands, the principal force hemmed up in a little village within reach of the enemy's heavy batteries and within striking distance of his large force, for the first time a feeling of despondency seized upon the minds of our men. Happily, General Smith, the officer in command at the village, was equal to the emergency, and extricated our force from its perilous situation.

He determined upon a night attack, and sent Captain Lee to San Augustin to confer with the general-in-chief in reference to supporting it by a diversion in front. In consequence of the lateness of the hour, the general deemed it impracticable to get any portion of Worth's command upon the ground in season, but gave full powers to Captain Lee to collect all the stragglers in front to operate as a diversion to the main attack projected by General Smith.

In the course of this interview General Pillow and General Twiggs came in, stating that, in consequence of the darkness and having no guide, they had found it impracticable to reach the village, and were obliged to retrace their steps; Pillow adding that they fell upon one of the enemy's pickets while thus groping their way, or came so near as plainly to hear their voices. Twiggs, a heavy man advanced in years, fell into one of the hollows of which the formation was full, and injured himself considerably.

I was present during almost the entire interview, having entered the room shortly after the arrival of Captain Lee, and everything I witnessed increased, if it were possible, my confidence in General Scott. Himself on the ground till dark came on, he had grasped the whole field of operations, and had determined to adhere to his original plan. He listened with perfect composure and complacency to Captain Lee's statement of the field, occasionally introducing a pertinent question, and with the utmost patience weighed the various suggestions of the officers, and particularly General Smith's plan of a night attack. Neither General Pillow nor General Twiggs made any suggestions as to what should be done. Captain Lee, having been in all parts of the field, and having full information on almost every point, was, as it were, the only person whom it was necessary to listen to.

The general listened with equal patience to what I had observed on the front attack. In the very commencement, and before the batteries had been ordered forward, I stated with much emphasis to General Twiggs that the attack should be against the enemy's left. "Attack his left, you cut him off from his reserves and hurl him into the gorges of the mountains." I, however, conducted the batteries forward, and with the assistance of Lieutenants McClellan and Foster, placed them in position. After reconnoitring towards the right in the attempt to find a better path for our guns and troops, and without success, I returned to the batteries, which in the mean time had been considerably advanced, and were exposed to a tremendous fire of grape. The howitzer battery was being served with great effect, and had almost cleared the ground in front of the ravine of the enemy. But very great delay occurred in bringing forward Magruder's battery and opening its fire. Everything seemed to go wrong with him. The enemy's grape, within point-blank range, in a measure disabled the howitzer battery, wounding many of the gunners and finally disabling Callender, who was wounded in both legs, and at this moment some little delay occurred in getting a supply of spherical case-shot. The supporting party was reduced to some eight rifles, and the enemy's skirmishers advanced. General Smith's brigade came up, and entered the cornfield to the left of the battery. At my request, two or three companies of the 3d infantry advanced to the front and right to protect the batteries. Soon the 9th infantry came up, with general orders to support the batteries, and were conducted by me over a cut and open cornfield, under a shower of the enemy's grape, to the cover of a ledge, from which, passing from cover to cover, driving the enemy's skirmishers before them, they reached the ravine, and crossing which they sheltered themselves on the opposite bluff on the edge of a cornfield. Colonel Ransom showed great gallantry and force in the management of his command, and to show the promptness of his command in following him, this anecdote is related. Only some eight or ten men were seen lagging behind, and these an officer of the regiment was cursing most lustily to urge them forward.

Just as the regiment had reached its position I met General Twiggs, and we both ascended to a little ridge, where we had a full view of the enemy's intrenched camp. Soon a shower of grape came in our direction. General Twiggs remained in his exposed position without moving a muscle, till I suggested the propriety of his stepping down to a little depression which afforded cover.

He informed me that Riley had been moving against the enemy's right for more than an hour. I remarked, "I will go and find him, and bring you back word of where he is," to which General Twiggs assented, and I immediately started in search of Riley. I was, however, much exhausted by my previous exertions, and the ground was of the difficult and almost impracticable honeycomb lava rock, and I was obliged to abandon the attempt, and returned to the advanced position of the 9th infantry.

On an elevated ridge just on the edge of the ravine, and partly sheltered by a cedar-tree, I had a distinct view of the whole position. I observed the encounter of the lancers with our own troops (which I afterwards ascertained to be Riley's command), and after an interval the enemy's reserves advancing in great force. They continued to advance in two lines of lancers and infantry, with clouds of skirmishers in front, and halted, their right nearly opposite the village of San Geronimo.

Whilst these reserves were advancing, there was an evident slackening, and at length a total cessation, of our return fire in front to the almost continual fire of grape and escopettes of the enemy. This led me to suppose that a change had taken place in our dispositions, involving great exposure perhaps to the 9th, and I returned for information. On my return I met many bodies of stragglers, who could afford no information as to the state of the field, heard the triumphal shouts from the Mexican lines, and finally fell upon General Pillow and General Twiggs. General Pillow was in much perplexity, was intent upon finding the village of San Geronimo, and wished me to conduct the 9th to that place. Not having been to the village, and dark coming on, I confessed my inability to conduct the regiment as he desired, and after considerable hesitation he directed me to bring back the regiment to the position of Magruder's battery. I accordingly went in the direction of the ravine, my chief guide being the discharge of the enemy's guns from the position of the reserve; but that failing, and the night becoming quite dark, I lost my way and wandered about, until finally I heard voices approaching in my direction, which I soon discovered to be from our own troops. Calling out to them, I was answered by Lieutenant Foster, of my own corps, who informed me that he was retiring with a party of about thirty rifles and 9th infantry men, having just been driven out from a small building, higher up and on the same stream with the position of the 9th infantry, by a large force of the enemy. At this time I was so exhausted that I could walk only with great difficulty, and was obliged to abandon going in quest of the 9th, and returned with Foster, who gave me the support of his arm till we reached Sibley's troop of dragoons, near the foot of the hill from which General Scott had overlooked the field. As we wended our way along the rain fell, small bodies of troops were to be seen from time to time, and everything had the appearance of a broken and dispirited army. It, was perhaps the only desponding moment our troops had seen since the opening of the campaign.

After resting about half an hour, I returned with Sibley, and reported what I had observed as above.

During the whole of this memorable evening, not only was General Scott perfectly composed and assured, but, in his intercourse with those present, neglected none of the courtesies due to guests. All those who came in tired and wet from the field he made sit down at his table and break their fast.

About twelve o'clock General Twiggs and Captain Lee set out on their way back to the field, Pillow remaining in town to sleep; and on arriving on the ground of the front attack Twiggs, entirely exhausted by his exertions, sought a little rest, and Lee collected the 9th and 12th, with some sappers and rifles, to make a diversion in front.

This note-book is not the place for a detailed account of the brilliant conflict planned by General Smith. Suffice it to say that, in consequence of the darkness and constant rain of the night, the attack projected to be made at three was not actually made till daylight. It was eminently successful, and without doubt was the most brilliant affair of the war. The principal charge was made by Riley on their reverse and rear, led by Tower, and supported by Smith's and Cadwallader's brigades, respectively commanded by Dimick and Cadwallader, Ransom in front making a diversion with the troops that had been collected in that quarter. The position was carried with little loss on our part, and the whole force of the enemy either killed, wounded, taken prisoners, or driven solitary fugitives from the field. General Valencia made his escape with the lancers in an eccentric direction, and was afterwards heard of at Toluca.

Our troops pushed on in pursuit and soon entered the town of San Angel, through which Santa Anna had passed that very morning with his reserves of fifteen thousand men. After a short halt at San Angel, Pillow in command ordered the column to move on Coyoacan, where an unimportant skirmish took place.

Here General Scott joined the column, and ordered a halt to reconnoitre and bring up the captured guns. Captain Lee went towards San Antonio with a dragoon escort to communicate with Worth, and I to the steeple of the church to use my glass. Turning it on the San Antonio road, I observed the enemy in full retreat, the whole road from San Antonio for more than a mile towards the city being filled with troops, pack-mules, and wagons. On reporting this to General Scott, he ordered Twiggs to advance to cut off their retreat, and assigned me to duty as the senior engineer officer of his division.

CHURUBUSCO.

On the head of the column reaching the fork of a road, whither a party of one hundred lancers had been driven by the mounted rifles, it was halted and a very rapid reconnoissance made of the roads in advance. Lieutenant McClellan taking the left-hand road and I the right, they were found to lead respectively to, and directly in front of, a church, which was observed to be occupied in strength. McClellan observed one gun, and a prisoner taken on the ground reported there were two guns. The engineer company was advanced in front of the building to support and continue the reconnoissance. Whilst on this duty it became engaged with the enemy, and the 1st artillery was ordered up in support.

Thus the action, on the part of Twiggs's division, commenced. It having been entered on, it was determined to make a bold and quick matter of it. Taylor's battery was ordered up, and took a position in the open space in front of the church. It was expected it would drive the enemy from the roof,[1] and enable the division--Smith in front, Riley on the left, and perhaps a regiment along the direct road--to carry the work by a _coup de main_. This course, recommended by myself to Twiggs, was taken. Some delay, however, occurred before Riley got in position and opened his fire. Meantime Taylor, serving his battery with extraordinary coolness and energy, was met by a terrific return from the enemy, who poured upon him an unceasing deluge of grape, his whole battery consisting of eight guns, one a 16-pounder. Taylor breasted it manfully for an hour and a half, when, two of his officers wounded and many of his men and horses killed and disabled, he was compelled most reluctantly to retire.

Soon after this Riley got in position and opened a sharp fire, producing an immediate and evident abatement in the enemy's fire. The 1st artillery had been in position from the commencement of the attack, and was now followed by the 3d infantry. The work attacked in front and rear by our infantry, all retreat cut off by Shields and Pierce occupying the causeway in rear, Worth in possession of the _tête-de-pont_, Duncan opening two guns on one of the long faces of the work, and Larkin Smith directing a 4-pounder against the convent, the white flag was hung out at the very moment the 2d and 3d infantry from the rear and front carried the work at the point of the bayonet. Immediately the flag of the 3d infantry was planted on the roof of the building; and over one thousand prisoners, including three general officers, surrendered to Twiggs.

The battle of Contreras and the subsequent advance upon San Angel and Coyoacan led to the evacuation of San Antonio. Whilst this was in progress, Clarke's brigade, conducted by Captain Mason, of the engineers, made a flank movement to the left, and cut the enemy's retreating column of three thousand in two, dispersing the rear portion and preventing its reaching the main body and entering into the subsequent fight. Worth, with both brigades, now pushed forward with great energy upon the heels of the other portion, till the column was arrested by a fire of grape from a strong bastioned field-work of fourteen feet relief and wet ditches in front, covering the passage of a canal, and somewhat in rear of the work attacked by Twiggs, and which, like the latter work, had not been noticed in the previous reconnoissances. Both brigades were formed in the cornfields on the right; the charge was ordered, Clarke in advance; and after a desperate but short conflict the work was carried at the point of the bayonet, the 6th infantry and 2d artillery particularly distinguishing themselves.

In the mean time Shields, in command of Shields's and Pierce's brigades, conducted by Captain Lee, the Palmetto regiment in advance, pursued a route to the left, and finally came in contact with the enemy near the hacienda on the great San Antonio causeway, a mile from the _tête-de-pont_. The enemy were in great force lining the causeway, and the lancers advancing towards the canal. The Palmettoes advanced most gallantly, led by their gallant colonel, Butler; but some hesitancy was manifested by the other commands, who retired under cover of the hacienda or crowded behind the Palmettoes. Notwithstanding the utmost exertions of the officers, a pause took place at good escopette range, and a considerable loss was experienced. The Palmettoes lost their colonel, shot dead, their lieutenant-colonel, wounded, four successive color-bearers, shot down, and nearly half their rank and file killed and wounded. Finally the movement was commenced, the enemy was charged through, and the causeway was filled with fugitives to the city.

The dragoons, who thus far had continued inactive, now took the causeway in pursuit, and the most gallant feat of the war was enacted. Captain Kearny, in advance with a squadron, pursued the fugitives to the very garita, where he charged directly up to a battery under a fire of grape, dismounted, calling upon his men to follow him, and entered the gorge of the work to take it by assault. Looking around, he found himself alone, the few men immediately following him having been shot down, and the remainder having retired in obedience to the return call from the rear, which for Kearny's safety had just at this moment been inauspiciously sounded. Surrounded by a crowd of fugitives, who pressed too closely upon him to use their weapons, he retreated, making a passage with his sword, mounted a jaded Mexican horse, and commenced to retire. Finding that the sorry speed of the brute would long time expose him to the enemy's grape, he dismounted and sought a better steed. Scarcely was he mounted when his arm was carried away by a grape; but he succeeded in making good his retreat. His first lieutenant, Ewell, had two horses shot under him, and his second lieutenant, Graham, was wounded in the hand.

This was the terrible and decisive conflict of the war, and was a case of a combined movement of all the divisions. The enemy's intrenched works were carried at the point of the bayonet. Surrounded on all sides, the strong defensive building attacked by Twiggs was obliged to surrender; the reserves, vigorously pushed, fled from the field; and the army, which in the morning was estimated to be 27,000 strong, scarcely presented in the evening a sorry array of 4000. We could have entered the city the same day had we chosen. But our troops had made extraordinary exertions, our casualties were great, and the general determined to operate against the city after deliberately weighing its capacity for defense.

After this disastrous defeat of the enemy General Scott rode through his lines, addressing with terseness, brevity, and feeling the troops as he passed them, who received him with great enthusiasm, and exhibiting all that moderation and equanimity which has eminently characterized his course throughout this campaign. Towards night he returned to his quarters at San Augustin.

All the divisions suffered in nearly equal proportion, the casualties amounting to 1066, of which about one fourth were killed or permanently disabled.

The 1st artillery suffered most severely in officers, losing in all the battles five gallant officers, Captains Capron and Burke, Lieutenants Irons, Johnson, and Hoffman.

It is probable the same and perhaps more decisive results could have been effected, and with far less loss, had Twiggs and Worth stopped in mid-career, and an hour been taken to reconnoitre the enemy's position. Pillow and Shields with Garland's brigade and Duncan's battery demonstrating in front, Twiggs's whole division with Taylor and the howitzer battery on the enemy's right, Clarke's brigade on their left, both making considerable detours, Clarke as a demonstration, Twiggs the great attack, the causeway might have been gained; Taylor's battery sent thundering on the enemy's rear, with Harney's horse and Riley's brigade cutting off all hope of succor, the enemy's works and the reserves inclosed by our troops must have immediately surrendered. Then, the prisoners and their works left in charge of Pillow, all the other divisions united could have been pushed forward in support of Riley, and the city could have been stormed with little or no loss.

This is expecting impossibilities. We knew nothing of the enemy's works, but we saw them in full retreat, we pushed forward to cut off their retreat, and, coming upon the enemy's intrenched position, we became engaged in the very act of reconnoitring it. The result was most glorious to our arms, and will, we trust, conclude the war.

Major Smith, the chief engineer, was present during the battle of Churubusco, and was distinguished for gallantry. He is suffering with the same disability as myself.

We were both exceedingly fatigued with our exertions, and were glad to get a night's rest at our quarters at San Augustin. Shortly after our return Captain Lee and Lieutenant Tower came in.

Captain Lee had made the most extraordinary exertions, having been on foot for two days and a night without a moment's rest. It was almost the only instance in this war I have seen him fatigued. His services were of the most important character, not second to those of any individual in this army. Lieutenant Tower, in his night reconnoissance and subsequent services in leading Riley's brigade against Valencia's intrenched camp, exhibited great resolution and high military qualities.

It seemed to be conceded by the whole army that the engineers in these important operations had done their duty, and that every individual officer had shown a readiness to participate in the perils incident to their service. In truth, the whole army, officers and men, were gallant, and in several instances exhibited all the terrible energy of the Anglo-Saxon race.

The night attack by Smith, and the storming of the works at Churubusco by Worth and Twiggs, are unsurpassed in war. The former was a rare combination of science and force, the latter an instance of desperate valor.

I slept little that night. The picture was mingled sunshine and clouds. The mangled forms of Capron, Burke, Johnston, and others whom I personally knew and respected, I could not keep from my mind. The experience of war is saddening. The terrible scenes of the battlefield cannot be effaced from the memory. We realize the observation of Franklin, "I scarcely ever knew a good war or a bad peace."

Lieutenant Stevens gained great reputation, both at headquarters and in the army generally, by the part he took in these brilliant operations. His reconnoissance of El Peñon was considered one of the most daring and complete of the war, and, as he modestly remarks, "General Scott was very much pleased with my reconnoissance, and I got more credit for it than I deserved." General William H. French (commander of the third corps, Army of the Potomac, in 1863) writes of this reconnoissance, in which he participated as one of the covering party: "It brought Lieutenant Stevens conspicuously before the army. That night the reports of the different officers of engineers were made to the general-in-chief in person; that of Lieutenant Stevens was so full and clear, it in a great measure decided General Scott to take the route around Lake Chalco, and attack the City of Mexico in reverse. From this time the general-in-chief recognized his ability and talents."

His exertions at El Peñon overtasked his strength, however, and in consequence he was obliged to ride for three days in an ambulance on the march around Lake Chalco as far as Rochimilco.

In the movement on the intrenched camp at Contreras, Lieutenant Stevens, advancing with the skirmishers to reconnoitre the position, saw at once that the decisive movement would be to turn the enemy's left, and seize the road between the camp and the city, thus isolating the former and cutting it off from reinforcements. Hastening to General Twiggs, he urged this movement upon that officer in his earnest and forcible manner, saying, "The true point of attack is the enemy's left. Attack his left, you cut him off from his reserves, and hurl him into the gorges of the mountains." The movement was at once decided upon. Riley's brigade was directed to the right (enemy's left) over the pedregal, followed by Cadwallader, and later by Shields and Smith; San Geronimo was seized, and the dashing victory of Contreras was the result. Lieutenant Stevens was the first to see and urge this decisive movement, and his advice was immediately adopted by the veteran Twiggs.

The terrific conflict of Churubusco, which followed hard on Contreras, was brought on, or perhaps it may be said precipitated, by Lieutenant Stevens. From the church steeple in Coyoacan he discovered the enemy in full retreat down the San Antonio causeway, and on his report to that effect, General Scott at once ordered Twiggs forward, and Lieutenant Stevens to accompany him as his senior engineer officer. Leading the division with the engineer company, he discovered the fortified church, or convent, barring the road; the company became engaged, and, the action having thus commenced, General Twiggs adopted almost implicitly the suggestions of the ardent young officer, and gave free rein to his efforts "to make a bold and quick matter of it." Lieutenant Stevens personally led and placed in position Taylor's battery, the 1st artillery (infantry), and other troops, greatly exposing himself during the action. The position, however, proved much stronger than was expected, a strong earthwork and breastwork being screened and partially concealed by tall, waving corn, which covered the fields in front, and cost the bloody and protracted fight before it fell. Lieutenant Stevens did not altogether escape criticism for putting the battery where it was so badly cut up; indeed, seems to have reproached himself; but his superiors, the veteran Twiggs and Scott, found no fault, knowing full well that great boldness and exertion are the price of great achievements in war. General H.J. Hunt relates that, after entering the city, a party of wounded officers were talking over matters, and Lieutenant Stevens reproached himself for having too severely criticised Magruder at Contreras, and remarked: "The very next day at Churubusco I did worse myself, acting on my judgment and eyesight, which deceived me, for I had not a knowledge of all the facts bearing on the situation. It was therefore my fault that Taylor's battery was knocked to pieces."

"Here, again," remarks General Hunt, "is his characteristic frankness and honesty, and _sense of justice_ to others, breaking out, and carrying him further than was necessary, and into doing injustice to himself."

ARCHBISHOP'S PALACE, 3-1/2 MILES FROM THE MAIN PLAZA
OF THE CITY OF MEXICO, Sunday, August 22, 1847.

MY DEAREST WIFE,--The great battle of Mexico has been fought, and
our arms have achieved a glorious triumph. Commissions are now
sitting to treat of an armistice that will terminate, as we all
trust, in a permanent and honorable peace to both countries. Mexico
is again without an army, and the gates of the capital are open to
us. Terrible was the conflict, severe our loss, particularly in
efficient and gallant officers; the whole army was engaged, and the
whole public force of Mexico struck down, large numbers of prisoners
and a great amount of material of war falling into our hands.

My heart is filled with gratitude to the Most High that I had the
strength to do my duty with the other officers of my corps, and
that, although much exposed in three different reconnoissances and
two hard-fought battles, I have escaped without a wound, and without
any abatement of my health and strength. I cannot feel exultation.
We have lost many brave officers and men, some my personal friends;
streams of blood have in reality flowed over the battlefield. The
hearts of the whole Mexican nation are thrilling with anguish and
dismay. Such is war, so glittering and imposing on parade and in
anticipation, so terrible in reality.

Puebla is about seventy-five miles from Mexico. On referring to the
map, you will find that the direct road passes between lakes Tezcuco
on the north, Chalco and Xochimilco on the south. At the Venta de
Chalco, about twenty miles from Mexico, the road turns off to pass
southward of the lakes. El Peñon, about eight miles from Mexico, is
a high hill entirely surrounded with water, along the edge of which
the great direct road to Mexico passes, consisting of a causeway for
about a mile and a half approaching it, and also of a causeway the
whole distance after leaving it, till we reach the City of Mexico.

General Twiggs with his splendid division was in the advance,
followed on successive days by Quitman, Worth, and Pillow. In five
days Twiggs was pushed up to Ayotla, fifteen or sixteen miles from
Mexico, General Scott continuing with him in the advance, and the
other divisions five, fifteen, and twenty-five miles in rear. As
they came up (it required two days), they were held in reserve at
the head of Lake Chalco, whilst the proper reconnoissances and
examinations were made to determine the general plan of attack. The
first day, a reconnoissance was made of the Peñon, supported by a
squadron of dragoons, a regiment of infantry, and two pieces of
artillery. The Peñon was found to be fortified and occupied in
force. Captain Mason, of the engineers (my friend Mason), Major
Gaines, of the Kentucky volunteers (taken prisoner just before the
great battle of Buena Vista, and who made his escape only one or two
days before the march of the army from Puebla), and myself rode some
distance in the advance, and observed near the causeway some eight
or ten Mexican officers. We were at least three quarters of a mile
from the rest of our force. We advanced upon them, they curveting
their horses and advancing upon us. When within about three hundred
yards they discharged their pistols, but we continuing our advance,
they all turned their horses and returned full speed across the
causeway, carrying with them a troop of lancers. The whole affair
was very amusing and afforded much sport. It did not diminish our
contempt of Mexican prowess.

The second day a splendid reconnoissance was made of the whole
country between the lakes, including the Peñon and Mexicalcingo at
the head of Lake Xochimilco. The particular reconnoissance of the
Peñon was intrusted to me. On my little horse, one of the most
enduring, spirited, and beautiful animals in the service, with two
dragoons, I went half way round the Peñon, and was for seven hours
within almost point-blank range of its guns, examining the different
batteries, determining the various approaches, and particularly the
character of the inundation. Frequently I was in the water up to the
belly of my horse. General Scott was very much pleased with my
reconnoissance, and I got more credit for it than I deserved. The
same day Mason made an admirable reconnoissance of Mexicalcingo.

Our spies had given information that the road around Chalco was
impracticable for our trains, and in consequence thereof the general
almost made up his mind to force Mexicalcingo, and at that point and
westward, fight the great battle of the war. He, however, determined
to wait one day for additional information.

Worth, who had now come up, was sent to Chalco, and a column under
the orders of Colonel Duncan reconnoitred the road around the lakes.
Our spies were found to have given wrong information, and the road,
though bad, was found to be practicable. That same evening General
Scott, with the whole field before him, determined to move around
Chalco, and ordered the movement to commence on the morrow.

The prompt advance of Twiggs to Ayotla, the brigade of dragoons of
the famous Colonel Harney two miles farther in advance, and the
brilliant reconnoissances of the two succeeding days impressed the
enemy with the belief that the Peñon was to be attacked, and they
lost no time in filling the place with troops, and putting in
position formidable batteries of nearly forty guns.

In the movement around the lakes Worth was in the advance, followed
by Pillow, Quitman, and Twiggs. The road was exceedingly bad and
narrow, in many places a perfect defile, obstructed by cuts, stones
from the hills in some cases formed into walls, and requiring great
patience, energy, and perseverance for the passage of the trains.

The third day Worth reached San Augustin, General Scott and staff
resting at Xochimilco with the divisions of Pillow, Quitman, and
Twiggs respectively some five and ten miles in rear; no obstruction
of moment occurring either in front or rear, unless we except a
demonstration of a large force of lancers on the movement of General
Twiggs's division from Ayotla, a demonstration brought speedily to a
close by the opening of Taylor's battery.

Early the next morning, Wednesday, August 18, Scott joined Worth;
developed his general plan of attack, and ordered the engineers
immediately to make vigorous reconnoissances of the position and
force of the enemy. He remarked, "To-day the enemy may feel us,
to-morrow we must feel him."

Accordingly two reconnoissances were made,--one, of the position of
San Antonio, three miles from San Augustin, on the great southern
road to Mexico, conducted by Major Smith; the other, of the road to
San Angel, turning the position of San Antonio, and bringing us to
the next great and adjacent causeway to the west. This latter
reconnoissance was conducted by Captain Lee.