The time was whiled away pleasantly enough at Matamoras, while we were waiting for volunteers. It is probable that all the most important people of the territory occupied by our army left their homes before we got there, but with those remaining the best of relations apparently existed. It was the policy of the Commanding General to allow no pillaging, no taking of private property for public or individual use without satisfactory compensation, so that a better market was afforded than the people had ever known before.
Among the troops that joined us at Matamoras was an Ohio regiment, of which Thomas L. Hamer, the Member of Congress who had given me my appointment to West Point, was major. He told me then that he could have had the colonelcy, but that as he knew he was to be appointed a brigadier-general, he preferred at first to take the lower grade. I have said before that Hamer was one of the ablest men Ohio ever produced. At that time he was in the prime of life, being less than fifty years of age, and possessed an admirable physique, promising long life. But he was taken sick before Monterey, and died within a few days. I have always believed that had his life been spared, he would have been President of the United States during the term filled by President Pierce. Had Hamer filled that office his partiality for me was such, there is but little doubt I should have been appointed to one of the staff corps of the army--the Pay Department probably--and would therefore now be preparing to retire. Neither of these speculations is unreasonable, and they are mentioned to show how little men control their own destiny.
Reinforcements having arrived, in the month of August the movement commenced from Matamoras to Camargo, the head of navigation on the Rio Grande. The line of the Rio Grande was all that was necessary to hold, unless it was intended to invade Mexico from the North. In that case the most natural route to take was the one which General Taylor selected. It entered a pass in the Sierra Madre Mountains, at Monterey, through which the main road runs to the City of Mexico. Monterey itself was a good point to hold, even if the line of the Rio Grande covered all the territory we desired to occupy at that time. It is built on a plain two thousand feet above tide water, where the air is bracing and the situation healthy.
On the 19th of August the army started for Monterey, leaving a small garrison at Matamoras. The troops, with the exception of the artillery, cavalry, and the brigade to which I belonged, were moved up the river to Camargo on steamers. As there were but two or three of these, the boats had to make a number of trips before the last of the troops were up. Those who marched did so by the south side of the river. Lieutenant-Colonel Garland, of the 4th infantry, was the brigade commander, and on this occasion commanded the entire marching force. One day out convinced him that marching by day in that latitude, in the month of August, was not a beneficial sanitary measure, particularly for Northern men. The order of marching was changed and night marches were substituted with the best results.
When Camargo was reached, we found a city of tents outside the Mexican hamlet. I was detailed to act as quartermaster and commissary to the regiment. The teams that had proven abundantly sufficient to transport all supplies from Corpus Christi to the Rio Grande over the level prairies of Texas, were entirely inadequate to the needs of the reinforced army in a mountainous country. To obviate the deficiency, pack mules were hired, with Mexicans to pack and drive them. I had charge of the few wagons allotted to the 4th infantry and of the pack train to supplement them. There were not men enough in the army to manage that train without the help of Mexicans who had learned how. As it was the difficulty was great enough. The troops would take up their march at an early hour each day. After they had started, the tents and cooking utensils had to be made into packages, so that they could be lashed to the backs of the mules. Sheet-iron kettles, tent-poles and mess chests were inconvenient articles to transport in that way. It took several hours to get ready to start each morning, and by the time we were ready some of the mules first loaded would be tired of standing so long with their loads on their backs. Sometimes one would start to run, bowing his back and kicking up until he scattered his load; others would lie down and try to disarrange their loads by attempting to get on the top of them by rolling on them; others with tent-poles for part of their loads would manage to run a tent-pole on one side of a sapling while they would take the other. I am not aware of ever having used a profane expletive in my life; but I would have the charity to excuse those who may have done so, if they were in charge of a train of Mexican pack mules at the time.