Utah in the American Civil War

The Utah Territory (September 9, 1850 - January 4, 1896) during the American Civil War was far from the main operational theaters of war, but still played a role in the disposition of the United States Army, drawing manpower away from the volunteer forces and providing its share of administrative headaches for the Lincoln Administration. Although no battles were fought in the territory, the withdrawal of Union forces at the beginning of the war allowed the Indian tribes to start raiding the trails passing through Utah. As a result, units from California and Utah were assigned to protect against these raids. Mineral deposits found in Utah by California soldiers encouraged the immigration of non-Mormon settlers into Utah.

As the war began in early 1861, the War Department pulled the Federal troops out of the Utah Territory and reassigned them to other regions where they were more immediately needed to quell the brewing rebellion. However, the void in military presence allowed the Church of Jesus Christ of Latter-day Saints (also known as Mormons) to regain control over the territory. Although the Mormons were the majority of settlers in the Great Salt Lake basin, the western area of the territory began to attract many non-Mormon settlers. Partly as a result of this, in March the Nevada Territory was created out of the western part of the territory. Earlier in the year, a large portion of the eastern area of the territory was reorganized as part of the newly created Colorado Territory.

In October 1861, the First Transcontinental Telegraph was completed, with Salt Lake City being the last link. Mormon leader Brigham Young was among the first to send a message, along with President Lincoln and other officials.

In 1862, with the ranks of the Union army swelled by more than 100,000 volunteers, the U.S. government believed it could now spare enough men to again occupy the Utah Territory. In addition, it was important to protect the overland mail route and telegraph lines along what later became known as the California Trail. Col. Patrick E. Connor marched into Utah with a regiment of California volunteers. His soldiers, of the 3rd California Infantry, constructed a small garrison just three miles (5 km) east of the Mormon stronghold of Salt Lake City. The post, named Camp Douglas for former Illinois presidential candidate and congressman Stephen A. Douglas, was officially established on October 26, 1862. Connor at once engaged in an acrimonious and bitter cold war with Brigham Young and the Mormon people, whom he accused of being disloyal and immoral. During the rest of the war, the fort served as the headquarters of the District of Utah in the Department of the Pacific.

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