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The Battle of Glorieta Pass was fought March 26–28, 1862 in the northern New Mexico Territory, by Union and Confederate forces during the American Civil War. While not the largest battle of the New Mexico campaign, the Battle of Glorieta Pass ended the Confederacy's efforts to capture the territory and other parts of the western United States.
The battle took place at the eponymous mountain pass in the Sangre de Cristo Mountains, in what is now Santa Fe County, New Mexico. Confederate forces sought to break the Union's possession of the West along the base of the Rocky Mountains, with the ultimate aim of controlling strategically valuable mines, railroads, and cities throughout the region. The invasion was the westernmost military operation of the war, and the South's only real attempt to conquer and occupy Union territory.
There was a skirmish on March 26 between advance elements from each army, with the main battle occurring on March 28. Although the Confederates were able to push Union forces back through the pass, they had to retreat when their supply train was destroyed and most of their horses and mules killed or driven off. Eventually, the invading force was forced to withdraw entirely from the territory, with the Union retaking full control by June. (Full article...) (Full article...)