The Bear River Massacre resulted from years of escalating conflict between the United States and the Shoshone people. After sustained skirmishes and food raids on farms and ranches, settlers had progressively displaced the Shoshone from their ancestral lands in the region. These tensions set the stage for military intervention as the U.S. Army sought to suppress what it characterized as Shoshone resistance to American expansion and settlement.
On January 29, 1863, Colonel Patrick Edward Connor led a detachment of California Volunteers in an attack on a large Shoshone winter encampment located at the confluence of the Bear River and Battle Creek in what was then southeastern Washington Territory, in present-day Franklin County, Idaho near Preston. The assault targeted the community of Northern Shoshone led by chief Bear Hunter. The attack resulted in the deaths of an estimated 250 to 493 Shoshone children, women, and men near their homes, while 21 U.S. soldiers were killed.
The Bear River Massacre holds profound historical significance as a major episode of violence against Native Americans. Some sources describe it as the largest mass murder of Native Americans by the U.S. military and the largest single episode of genocide in U.S. history. The event is also known as the Engagement on the Bear River, the Battle of Bear River, and the Massacre at Boa Ogoi, reflecting the different ways in which this violent encounter has been characterized and remembered.
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.
c.250 to 493 Shoshone killed; 21 U.S. soldiers killed
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