Moved by love of conquest, or desire to spread the gospel, the Spaniards followed the meandering course of the stream for hundreds of miles, overcoming the barriers which nature had placed in the pathway of those who sought to conquer the arid and inhospitable wilderness, through which this great stream passed to its union with the far off sea. Navigable for only four hundred and fifty miles from the ocean, it held out no hope to those who might seek an easy way to its source. The great trail which led from the settlements on the Atlantic to the new-found lands on the Pacific required the travelers to pass the Rio Grande near Santa Fe. There was no chance to start at El Paso and travel northward by the Rio Grande to the heart of New Mexico and thence find an outlet to the Pacific Ocean. The men who pushed from the East to the Golden Gate preferred to mark out a line from the Missouri River, overland from Missouri, Kansas and Colorado, the Indian Territory and New Mexico. A southern trail might have been shorter, but mountains intervened and nature forced men to make their highway for wagon trains by Santa Fe from the East. The pioneer spirit was strongest in the Missouri Valley, and the population on the Mississippi was content to let those farther north pursue the passage to the Pacific by the northern route. A thin line of settlements had been established along the trail, but no large population was willing then to endure the hardships which surrounded those who lived in those isolated regions; and the white men refused to pass southward by the Rio Grande or the Mexican border, for the country was so inhospitable that it held out no inducements to emigration, commerce or settlement.

When the war between the states began to stir the hearts of the people of the South, after a brief delay, Texas, that great empire with more than two hundred and sixty-six thousand square miles, but thinly populated area, caught the patriotic spirit of the hour, and cast herself, body and soul, into the struggle of the Southland for liberty and independence.

In February, 1861, an ordinance of secession was passed, and nine years later Texas was re-admitted to the Union. General H. H. Sibley, a native of Louisiana, resigned from the United States Army and entered the service of the Confederate States. Familiar with the geography of New Mexico, he visited Richmond, Virginia, was commissioned brigadier general and returned to Texas with authority to lead a brigade up the Rio Grande to Santa Fe. Few believed, at that early date, that war would last a year, and one of the reasons impelling this expedition was to possess as much territory as possible, so that when hostilities ceased, the territories of the Confederacy would cover the largest possible space. General Sibley reached San Antonio, where the troops raised to compose his command were being mustered in. A statement of his plans aroused the zeal and enthusiasm of those who were to engage in the adventure.

The conquest of New Mexico appeared feasible and important. It would cut in twain the land route between the Atlantic and Pacific coasts, and by reason of its supposed strategic importance, prove of tremendous value to the Confederate states.

The project was bold, daring, but illy considered, and in the end, while sustained by heroism and courage that certainly has no superior in the great story of Southern manhood, yet proved a most unfortunate and distressing failure. From El Paso, on the extreme western boundary of Texas, to Santa Fe, by the route along the Rio Grande, was something like six hundred miles. The Santa Fe railroad of later days has rendered this journey easy and pleasant, but in 1861-62, the route was a vast wilderness, not producing enough food to sustain the sparse number of people who had settled along this trail. Venomous reptiles hid themselves in the recesses of the sandy and rocky ways, or laid in wait for their victims amidst the numerous crevices that marked every mile. The very shrubbery seemed to defy the advance of civilization, and the thorns and thistles that stood out on every bush appeared to enter fierce protests against habitation by man or beast.

In the earlier days of the war, before experience had made men deliberate, and to sit down and count the cost ere entering upon any great military enterprise, it was only necessary for someone to cry “Forward!” and chivalrous patriots were ready to follow wherever any leader might bid them go. The 4th, 5th and 7th Texas mounted regiments were mustered into the Confederate service for three years, or during the Civil War. This enlistment took place October, 1861. Colonel James Riley commanded the 4th. Later, at the head of his regiment, he met a soldier’s death in Louisiana. Thomas Green became colonel of the 5th, and William Steele, colonel of the 7th Regiment. These formed a brigade under the command of Brigadier General H. H. Sibley. Steele did not go with his regiment, which was led by Lieutenant Colonel J. S. Sutton, who died heroically while leading his men at the Battle of Val Verde near Fort Craig. Later, General Thomas Green was promoted to the rank of brigadier general. These regiments reorganized, then became known as Green’s Brigade. When the true story of the war shall be fitly told, the world will realize that no men who marched under the stars and bars did more to win the admiration and applause of the entire Southland than those who composed this wonderful organization.

At this early period of the war, arms were scarce. The fruits of victory had not then given Federal equipments to Texas, and these soldiers were supplied with shotguns and hunting rifles of varying calibre and necessitating the preparation of each man’s ammunition by himself. Many of these volunteers had mingled with the Mexicans and heard their stories of the fiery charges of the Mexican Lancers and of the deadly execution which they made with their shafted spears, and following, unwisely, the suggestions of General Sibley, two companies of the 5th Regiment were induced to exchange their guns for that medieval arm, the Mexican lance.

The troops were enlisted and sworn in at San Antonio, and before beginning the most difficult part of their journey up the Rio Grande, marched from San Antonio to El Paso, seven hundred miles, in broken detachments. At this point, the government had accumulated a small supply of commissary stores. Between San Antonio and Santa Fe, there was not a town or village which could have furnished, from its own storage, a full day’s supply of rations and forage for the command. The settlements were not only few in number, but very far apart, and with small populations. It thus came about that the troops were compelled to carry rations for the whole march. These were very meagre, and were transported in wagons drawn by small Mexican mules. Meat was provided through beeves that were driven on foot. No forage of any kind was to be had other than the grass which grew upon the plains. As if to make the journey still more difficult, water was extremely scarce; and many parts of the journey, both men and beasts were compelled to go on as long as thirty-six hours before relieving their thirst. The men carried a day’s supply in their canteens, but the poor beasts had no provision for quenching the burning of their fevered throats. There was not then living in the entire territory from El Paso to Santa Fe as many as three hundred sincere Southern sympathizers. The great majority of the population were poor, illiterate Mexicans, who had a traditional hatred of all Texans. The secession of Texas from Mexico in 1835, the Santa Fe expedition in 1841 and the war between the United States and Mexico in 1846, had planted in the minds of these rude frontiersmen bitter memories of the Texans.

Almost everywhere, without exception, this brigade, when leaving El Paso and ascending the great river, found itself in a hostile country, a country so devoid of food that it was hardly able to maintain its own people from want, and which with great difficulty supplied them with the bare necessities of life. To make this journey still more difficult for the Confederates, General Canby, then and later on, showing himself to be a wise and sagacious officer, had already, by force or purchase, secured for the support of the Federal troops whatever the needs of these poor people could spare.

Most of the great marches of the war, made by cavalry, were through countries that could at least supply food for a few hours for man and beast. None of them undertook to haul their commissary stores six hundred miles or to rely upon beef driven afoot to satisfy their hunger. The great passion of the brigade was to be led forward. They had gone too far to return without a fight and were anxious to find somebody to engage in conflict. Practically no preparations had been made to arrange for the wants of the soldiers. No foresight had provided stores where food might be garnered, nor wells dug, from which water, that greatest essential of long marches, might be supplied. The brigade finally composing this expedition consisted of the 4th and 5th and part of the 7th Texas mounted infantry, five companies of Baylor’s Regiment, Tool’s light battery and Coopwood’s independent company, aggregating twenty-five hundred men. One-sixth of all these men were required for the protection of the supply train and herd of beeves, and therefore could not be relied upon in case of battle.