Yuma War
The Yuma War was the name given to a series of United States military operations conducted in southern California and what is today southwestern Arizona from 1850 to 1853. The Yumans were the primary opponent of the United States Army, though engagements were fought between the Americans and other native groups in the region. Conflict generally took the form of guerrilla warfare, and, over the course of three years, the army engaged in pursuing unfriendly natives, protecting American settlers crossing the Colorado River and preventing conflict between the native tribes. A peace treaty in summer of 1853 was signed, ending hostilities between the Yuma and the United States, but it sparked a short war between the Yuma and the Cocopah. During the conflict, the historic Fort Yuma was constructed and became an important outpost on the frontier.
Utah War
The Utah War (1857–1858), also known as the Utah Expedition, Utah Campaign, Buchanan's Blunder, the Mormon War, or the Mormon Rebellion was an armed confrontation between Mormon settlers in the Utah Territory and the armed forces of the United States government. The confrontation lasted from May 1857 to July 1858. There were some casualties, mostly non-Mormon civilians. The war had no notable military battles.