The History of American Military. Richard W. Stewart
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overland to Camargo, his supplies to come by steamboat up the Rio Grande. But he could not move immediately because he lacked transportation— partly because of his failure to requisition in time and partly because of the effort required to build more wagons in the United States and to collect shallow-draft steamboats at river towns on the Mississippi and the Ohio and send them across the Gulf of Mexico. Ten steamboats were in operation at the end of July, but wagons did not begin arriving until November, after the campaign was over. To supplement his wagon train, reduced to 175, Taylor had to rely on 1,500 Mexican pack mules and a few native oxcarts.
In manpower Taylor had an embarrassment of riches. May saw the arrival of the first of the three-month militia he had requested on April 26 from the governors of Texas and Louisiana. With them came thousands of additional six-month volunteers from neighboring states recruited by Bvt. Maj. Gen. Edmund P. Gaines, commander of the Department of the West, on his own initiative—a repetition of his impulsive actions during the Second Seminole War. More than 8,000 of these short-term volunteers were sent before Gaines was censured by a court-martial for his unauthorized and illegal recruiting practices and transferred to New York to command the Department of the East. Very few of his recruits had agreed to serve for twelve months. All the rest were sent home without performing any service; in the meantime they had to be fed, sheltered, and transported. In June the volunteers authorized by Congress began pouring into Point Isabel and were quartered in a string of camps along the Rio Grande as far as Matamoros.
By August Taylor had a force of about 15,000 men at Camargo, an unhealthy town deep in mud from recent heavy rains and sweltering under heat that rose as high as 112 degrees. Many of the volunteers became ill, and more than half were left behind when Taylor advanced toward Monterrey at the end of August with 3,080 regulars and 3,150 volunteers. The regulars with a few volunteers were organized into the First and Second Divisions, the volunteers mainly into a Field Division, though two regiments of mounted Texans were thought of as the Texas Division. More than a fourth of the troops were mounted, among them the First Mississippi Rifle Regiment under a West Point graduate recently elected to Congress, Col. Jefferson Davis. The mounted riflemen had percussion rifles; the infantrymen were armed with flintlock smoothbore muskets. Taylor placed great reliance on the bayonet. He had a low opinion of artillery, and though warned that field pieces were not effective against the stone houses of Mexican towns, he had in addition to his four field batteries only two 24-lb. howitzers and one 10-inch mortar, the latter his only real siege piece.
By September 19 Taylor’s army reached Monterrey, a well-fortified city in a pass of the Sierra Madres leading to the city of Saltillo. Monterrey was strongly defended by more than 7,000 Mexicans with better artillery than the Mexicans had had at Palo Alto—new British 9- and 12-lb. guns. Taylor, encamped on the outskirts of Monterrey, sent out reconnoitering parties accompanied by engineers and on September 20 began his attack. On the north the city was protected by a formidable citadel, on the south by a river; and it was ringed with forts. Taylor sent one of his regular divisions, with 400 Texas Rangers in advance, around to the west to cut off the road to Saltillo; and after a miserable night of drenching rain it accomplished its mission the next day, September 21, though at a cost of 394 dead or wounded, a high proportion of them officers. Taylor placed his heavy howitzers and one mortar in position to fire on the citadel and sent the remainder of his forces to close in from the eastern outskirts of the town. By the third day both attacks were driving into the city proper, the men battering down doors of the stone and adobe houses with planks, tossing lighted shells through apertures, and advancing from house to house rather than from street to street—tactics that were to be used a century later by American troops in Italian and German towns.
The climax came when the 10-inch mortar was brought up to lob shells on the great plaza into which the Mexican troops had been driven. On September 24 the Mexican commander offered to surrender on condition that his troops be allowed to withdraw unimpeded and that an eight-week armistice go into effect. Taylor agreed to the proposal. He had lost some 800 men to battle casualties and sickness, besides quantities of arms and ammunition, and he was about 125 miles from his base. Moreover, he believed that magnanimity would advance the negotiations for peace that had begun when President Polk allowed General Antonio Lopez de Santa Anna to return to Mexico from exile in Havana to exert his influence in favor of a treaty.
When Polk received the news from Monterrey by courier October 11, he condemned Taylor for allowing the Mexican Army to escape and ordered the armistice terminated. On November 13 Taylor sent a thousand men 68 miles southwest to occupy Saltillo, an important road center commanding the only road to Mexico City from the north that was practicable for wagons and guns. Saltillo also commanded the road west to Chihuahua and east to Victoria, capital of Tamaulipas, the province that contained Tampico, the second largest Mexican port on the gulf. The U.S. Navy captured Tampico November 15. On the road to Chihuahua was the town of Parras, where General Wool’s expedition of about 2,500 men arrived early in December after a remarkable march from San Antonio. On the way Wool had learned that the Mexican troops holding Chihuahua had abandoned it; accordingly, he joined Taylor’s main army. Taylor thus acquired a valuable West Point–trained engineer officer who had been scouting with Wool, Capt. Robert E. Lee.
Taylor was planning to establish a strong defensive line, Parras- Saltillo-Monterrey-Victoria, when he learned that most of his troops would have to be dispatched to join General Scott’s invasion of Mexico at Vera Cruz, an operation that had been decided upon in Washington in mid-November. Scott arrived in Mexico in late December. He proceeded to Camargo and detached almost all of Taylor’s regulars, about 4,000, and an equal number of volunteers, ordering them to rendezvous at Tampico and at the mouth of the Brazos River in Texas. Taylor, left with fewer than 7,000 men, all volunteers except two squadrons of dragoons and a small force of artillery, was ordered to evacuate Saltillo and go on the defensive at Monterrey.
Gen’ Scott’s Entrance into Mexico, C. Nebel, ca. 1855
Enraged, Taylor attributed Scott’s motive to politics. Hurrying back to Monterrey from Victoria, he decided to interpret Scott’s orders as “advice” rather than as an order. Instead of retiring his forces to Monterrey, he moved 4,650 of his troops (leaving garrisons at Monterrey and Saltillo) to a point eighteen miles south of Saltillo, near the hacienda of Agua Nueva. This move brought him almost eleven miles closer to San Luis Potosi, 200 miles to the south, where General Santa Anna was assembling an army of 20,000. Most of the 200 miles were desert, which Taylor considered impassable by any army; moreover, both he and Scott believed that Santa Anna would make his main effort against Scott’s landing at Vera Cruz, the news of which had leaked to the newspapers. On February 8, 1847, Taylor wrote a friend, “I have no fears.”
At the time he wrote, Santa Anna was already on the march north toward Saltillo. Stung by newspaper reports that he had sold out to the Americans, Santa Anna risked a daring strategic move. He was determined to win a quick victory, and he thought he saw his opportunity when his troops brought him a copy of Scott’s order depleting Taylor’s forces, found on the body of a messenger they had ambushed and killed. Leading his army across barren country through heat, snow, and rain, by February 19 Santa Anna had 15,000 men at a hacienda at the edge of the desert, only thirty-five miles from Agua Nueva. One of the hardest fought battles of the Mexican War was about to begin.
Battle of Buena Vista
On the morning of February 21 scouts brought word to General Taylor that a great Mexican army was advancing, preceded by a large Gen’ Scott’s Entrance into Mexico, C. Nebel, ca. 1855 body of cavalry swinging east to block the road between Agua Nueva and Saltillo. That afternoon Taylor withdrew his forces up the Saltillo road about 15 miles to a better defensive position near the hacienda Buena Vista, a few miles south of Saltillo. There, a mile south of the clay-roofed ranch buildings, mountain spurs came down to the road on the east, the longest and highest known as La Angostura; between them was a wide plateau cut by two deep ravines. West of the road was a network of gullies backed by a line of high hills. Leaving