History of Wyoming - Indian Wars

Indian Wars

The influx of emigrants and settlers into the state lead to more encounters with the American Indian, resulting in an increase of military presence along the trails. Military posts such as Fort Laramie were established to maintain order in the area. In 1851, the first Treaty of Fort Laramie was signed between the United States and representatives of American Indian nations to ensure peace and the safety of settlers on the trails. The 1850s were subsequently quiet, but increased settler encroachment into lands promised to the tribes in the region caused tensions to rise again, especially after the Bozeman Trail was blazed in 1864 through the hunting grounds of the Powder River Country, which had been promised to the tribes in the 1851 treaty. As encounters between settlers and Indians grew more serious in 1865, Major General Grenville M. Dodge ordered the first Powder River Expedition to attempt to quell the violence. The expedition ended in a battle against the Arapaho in the Battle of the Tongue River. The next year the fighting escalated into Red Cloud's War which was the first major military conflict between the United States and the Wyoming Indian tribes. The second Treaty of Fort Laramie in 1868 ended the war by closing the Powder River Country to whites. Violation of this treaty by miners in the Black Hills lead to the Black Hills War in 1876, which was fought mainly along the border of Wyoming and Montana.