Saltillo may be regarded as the pass of the Sierra Madre, rather than Monterey; because, from Saltillo there is a road to Presidio on the Rio Grande, and thence to San Antonio of Texas. There should be another division, or rather army, to take this road, and form a junction with General Taylor at Saltillo. Perhaps, that under General Wool, instead of proceeding to Chewawa, may take that course.[[2]] The range of mountains called the Sierra Madre, forms an impenetrable barrier between the States west of the Rio Grande and the other Mexican States. There are said to be but three passes: the first, from Tampico, by following the Panuco river from the head of its navigation, but affording only a mule track; the second, that of Saltillo; and the third, by the Rio Conchas to Chewawa. The distance from Saltillo to Tampico, is not less than six hundred miles; and after ascending the mountains to the table land, there is nothing but a dreary desert for at least three hundred miles. This, at once suggests the difficulty of the march to Mexico; and, also, the difficulty on the part of Mexico of sending armies to recover the country between the mountains and the Rio Grande. If the war should continue, which I hope may not be the case, these, and other passes (for I have no doubt there are others) should be seized and fortified, instead of making the Rio Grande the line of defence; establishing fifty assailable points, instead of three, for an enemy’s concentrated force to strike wherever that enemy may choose. If conquest be intended, or result from the war, this line of defence along the Sierra Madre would be absolutely necessary to the planting States, as slavery could not be maintained with the Rio Grande as the boundary. In my opinion, the only real advantage which will be gained by this extension of our territory, will be the navigation of the Rio Grande, which will open a trade with the Internal Provinces capable of vast extension. Few southern planters would run the risk of taking their slaves west of the Rio Grande, even with the Sierra Madre as the boundary. They would, of course, migrate in single families, and their negroes could escape, if they thought proper, as fast as they came. I have no doubt, many of them would remain of choice, with their owners; but they would be insecure as property, and that would discourage the importation. The navigation of the Rio Grande is capable of great improvement, and it is ascertained that there is an abundance of coal on its banks. These banks will, some day, be crowded with towns and cities, and their fertile soil will support as large a population as the Nile.
[2]. General Wool marched from Paras to Saltillo.
There are but two roads by which the city of Mexico can be approached by our invading armies. The first is, from Saltillo, through the populous States of Zacatecas, Guadalajara, Guanahwato, San Louis, and Queretaro, containing near four millions. Now, is it probable, that these States will offer no resistance to the long march of General Taylor at the head of a handful of men? I do not doubt, but that in the open field, at the head of ten thousand men, he would beat three times that number; but the heavy loss sustained at Monterey must satisfy us that such victories will be dearly bought. It cannot be said that the Mexican soldiers have not fought, and on some occasions, have not fought well, and they may learn to fight better. But let us consider again, what an immense commissariat must accompany an army on such a march, to afford the necessary supplies. Those who are urging the march of General Taylor on Mexico, are, perhaps, not as well acquainted as he is with what is necessary for such an undertaking. The second road is from Vera Cruz, the distance of three hundred miles, through a thickly settled country, but with numerous defiles, and where there must be fighting at every step. Vera Cruz may be taken, and will be taken, and then the Castle will fall. Here will be a depot to supply the invading army as it shall advance, step by step; and is it likely we can land an invading army of sufficient strength to crush the forces of the Republic under Santa Anna? If the Mexicans make but an indifferent use of the means in their power, it would seem to me impossible for us to reach their capital! The province of Mexico alone, not as large as one of our counties, contains a million and a half of people. If they are like our countrymen, I should say it would be impossible for an invading army of thirty thousand men to penetrate three hundred miles through a country so well fortified by nature. We must expect to fight our way through fifty thousand men at least, which Santa Anna could bring into the field. The country is now united against us, under his sway, by every consideration of hatred and religious feeling, if not of patriotism. I consider it madness to undertake such a march with twenty thousand men, regulars and volunteers, however chivalrous they may be, if Santa Anna should throw himself between Vera Cruz and Mexico, with the army he has been collecting and training, with so much industry at San Louis Potosi.
We may hold the other side of the Rio Grande; and as soon as our people crowd into it, and bear some proportion to the population already there, it may be regarded as conquered. As to California, it is already ours, and we must soon be complete masters of it, for it will be occupied by our people. The Texan side of the Rio Grande will be ours in consequence of the towns, garrisons, and settlements which will be rapidly established there. We may take Tampico, and hold it; and we may also take Vera Cruz, and retain it until Mexico comes to terms; and it seems to me impossible that she will not do this in order to regain her only seaport, while we, at the same time, cut off all her foreign trade! Nothing but the most stupid, blind, and ignorant obstinacy would prevent her from treating with us under such circumstances. I approve the taking California, and New Mexico, for the purpose of holding them under sequestration, until Mexico shall be willing to make peace on just and reasonable terms. Since the armistice, on the surrender of Monterey, two months must elapse before any further steps can be taken by General Taylor. He was in no condition to advance further than Saltillo; at any rate; and, perhaps, without completing his conquests of the country east of him, towards the gulf, it would have been unwise to have moved beyond Monterey. He had important preparations to make, of a very different character from those of his forced march on that city. And, besides, he entertained hopes, as we all did, that during the breathing spell, some means might be found to put an end to the war. In the capitulation of Monterey, he has shown himself as humane as he is brave.
Letter 5.
Capitulation of Monterey—Ideas of conquests in Mexico.
October 26, 1846
Sir: When I wrote my last letter I had not seen the capitulation of Monterey, at least the official report. It appears, that the terms were conditional, and allow no more time than is absolutely requisite for Gen. Taylor to make his arrangements for ulterior movements. The city was taken by a forced march, with only a part of the troops. The attempt to cast censure, by indirection, on this meritorious officer, betrays a jealousy of his growing popularity. The capture of Monterey is of immense importance, as well on account of its being one of the keys of Mexico, as on account of the vast amount of public property, in arms and munitions captured, which Mexico is in no condition to replace. That city was a stronghold under the Spaniards before the Mexican revolution, and contained a great quantity of cannon, transported with immense difficulty and expense, from the city of Mexico. It was in fact, the metropolis of the provinces of the Rio Grande; and if a new confederacy should be formed by those States, it would be the seat of the federal Government. In a few weeks, the sickly season will be over; the surviving sick will be again fit for duty, the commissariat will be enabled to complete its supplies, and transportation for the army, considerable reinforcements will reach the seat of war, and then we may expect an onward movement.
General Taylor having now gained a safe footing, must go to work to consolidate his occupation, or if you will, his conquest of the country between the Rio Grande, the mountains, and the Gulf. This extensive tract of country, as large as Italy, and resembling it in scenery, climate, and soil, is now cut off by our arms and by its natural boundary, from the rest of Mexico. It ought to be completely occupied, by fortifying the principal points on the Rio Grande, the mountain passes of the Sierra Madre, and also by the occupation of the chief towns of New Leon, Coawilla, and Tamaulipas. Tampico, of course, must be taken by a combined land and naval attack. It has a shallow sea coast from Tampico to the mouth of the Rio Grande, of four hundred miles, whilst it stretches east and west, between the mountains and the river, nearly double that distance. Here is an extent of surface equal to that from the Potomac to the Savannah and east of the Appalachian chain. It is capable of containing four millions of souls, and in the hands of Americans, would be rapidly filled up by them and European emigrants. The climate is said to be delightful, and much more temperate than might be expected from its latitude. I have rated its population at five hundred thousand; this estimate may be too high; but it is possible, that the common estimate may be too low. The following is that given by a recent pamphlet, including Chewawa: