The Battle of the Washita River occurred on November 27, 1868, as part of the broader conflict following the Medicine Lodge Treaty of 1867. The Southern Cheyenne and Arapaho had been required by treaty to relocate south from present-day Kansas and Colorado to a reservation in Indian Territory. Custer's 7th U.S. Cavalry attacked Black Kettle's Southern Cheyenne camp after scouts tracked an Indian raiding party that had attacked white settlers, leading them to the isolated village on the Washita River near present-day Cheyenne, Oklahoma.
Lieutenant Colonel George Armstrong Custer commanded the cavalry assault on the Cheyenne encampment. The attack targeted what was described as the most isolated band within a major winter encampment along the river that contained numerous Native American tribal bands totaling thousands of people. Black Kettle's people had been at peace and were actively seeking peace at the time of the assault. The soldiers engaged in combat with warriors while also killing women and children during the assault, demonstrating the indiscriminate nature of the violence.
The immediate outcome of the attack resulted in significant casualties among the Cheyenne population. Beyond those killed in combat, Custer's forces took many captives to serve as hostages and human shields. The precise number of Cheyenne killed in the attack has remained disputed since the initial reports were filed, making a definitive casualty count difficult to establish with certainty from historical records.
The Indian Wars encompass more than three centuries of armed conflict between the United States government, American settlers, and Indigenous nations — from the Powhatan Wars of the 1620s through the final Plains campaigns of the late 19th century. The eastern conflicts — King Philip's War (1675–1676), the Tuscarora War (1711–1715), and the Creek and Seminole Wars — largely ended organized Indigenous resistance east of the Mississippi by the 1840s. On the Great Plains, the Sioux Wars (1854–1890), Red River War (1874–1875), and Nez Perce War (1877) followed the displacement wrought by the transcontinental railroad and the near-extinction of the American bison — an estimated 30 to 60 million animals reduced to fewer than 1,000 by 1890. The Ghost Dance religious movement and the massacre at Wounded Knee (December 29, 1890), in which US cavalry killed approximately 250 Lakota men, women, and children, marked the effective end of armed resistance. The Dawes Act (1887) allotted reservation land to individual families, opening millions of acres to white settlement and reducing Indigenous landholdings by about two-thirds over the following decades.
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