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New Mexico campaign

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2093032

New Mexico campaign

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New Mexico campaign

The New Mexico campaign was a military operation of the trans-Mississippi theater of the American Civil War from February to April 1862 in which Confederate Brigadier General Henry Hopkins Sibley invaded the northern New Mexico Territory in an attempt to gain control of the Southwest, including the gold fields of Colorado and the ports of California. Historians regard the campaign as the most ambitious Confederate attempt to establish control of the American West and to open an additional theater in the war. It was an important campaign in the war's Trans-Mississippi theater, and one of the major events in the history of the New Mexico Territory in the American Civil War.

The Confederates advanced north along the Rio Grande from Fort Bliss in Texas. They won the Battle of Valverde but failed to capture Fort Craig or force the surrender of the main Union Army in the territory. They continued north across the border towards Santa Fe and Fort Union, leaving that Union force in their rear. At Glorieta Pass, the Confederates defeated another Union force from Fort Union, but were forced to retreat following the destruction of the wagon train containing most of their supplies.

Confederate success in the failed campaign would have denied the Union a major source of the gold and silver necessary to finance its war effort, and the Union navy would have had the additional difficulty of attempting to blockade several hundred miles of coastline in the Pacific. A Confederate victory would have also diverted Union troops which, following the invasion, were used to fight Native tribes on the plains and in the Rockies.

Union forces in the Department of New Mexico were led by Colonel Edward Canby, who headquartered at Fort Craig. Under his immediate command at the fort were five regiments of New Mexico volunteer infantry, a company of the 2nd Colorado Infantry, two provisional artillery units, eleven companies of the 5th, 7th, and 10th U.S. Infantry, six companies of the 2nd and 3rd U.S. Cavalry, and two regiments New Mexico militia. At Fort Union, under the command of Colonel Gabriel Paul, were the 1st Colorado Infantry, a company of the 2nd Colorado Infantry, a battalion of the 5th U.S. Infantry Regiment, a detachment from the 1st and 3rd U.S. Cavalry, a company of the 4th New Mexico Infantry, and two provisional artillery batteries.[citation needed]

The Confederate Army of New Mexico was led by Brigadier General Henry Hopkins Sibley. His units included the 4th Texas Mounted Rifles and 5th Texas Mounted Rifles (both of which had batteries of mountain howitzers), five companies of the 7th Texas Mounted Rifles, six companies of the 2nd Texas Mounted Rifles with an attached artillery battery, and several companies of Arizona Confederate mounted volunteers. Following his arrival in New Mexico in January, Sibley organized his artillery into a battalion under the command of Captain Trevanion Teel, whom he promoted to major. Five additional companies of the 7th Texas arrived near the end of February and served as the garrison of Fort Thorn at Mesilla.[citation needed]

For years, residents in the southern part of the New Mexico Territory had been complaining that the territorial government in Santa Fe was too far away to properly address their concerns. The withdrawal of the Regular army at the beginning of the war confirmed to the residents that they were being abandoned. Secession conventions in Mesilla and Tucson voted to join the territory to the Confederacy in March 1861, and formed militia companies to defend themselves. In July 1861, Lieutenant Colonel John Baylor led a battalion of Texas mounted rifles into the southern portion of the New Mexico Territory, entering Mesilla and repulsing the attack of the Union garrison of Fort Fillmore at the First Battle of Mesilla. The victorious Baylor established the Confederate Territory of Arizona south of the 34th parallel.[citation needed]

The 1862 campaign was a continuation of this strategy formulated by Sibley in a plan presented to Confederate president Jefferson Davis. Sibley's strategy called for an invasion along the eastern side of the Rocky Mountains, seizing the Colorado Territory (then at the height of the Colorado Gold Rush) and Fort Laramie (the most important United States Army garrison along the Oregon Trail), before turning westward to attack mineral-rich Nevada and California. He planned to take minimal supplies along with him, intending to live off the land and to capture the stockpiles of supplies at Union forts and depots along the Santa Fe Trail. Once the territories had been secured, Sibley intended to take the northern Mexican states of Chihuahua, Sonora, and Lower California, either through purchase or by invasion.

On December 20, 1861, General Sibley, in command of the Army of New Mexico, issued a proclamation taking possession of New Mexico in the name of the Confederate States. He called on the citizens to abandon their allegiance to the Union and to join the Confederacy, warning that those "who co-operate with the enemy will be treated accordingly, and must be prepared to share their fate." In February 1862, Sibley advanced northward from Fort Thorn up the valley of the Rio Grande, toward the territorial capital of Santa Fe and the Union storehouses at Fort Union. Along the way, Sibley detached 54 men to occupy Tucson. The Confederate advance followed the west bank of the river via Fort Craig, which was garrisoned by a 3,800-man Union force under Canby. Knowing he could not leave such a large Union force behind him as he advanced, Sibley attempted to lure the Union forces out into battle on favorable terms.

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