The Bear River Massacre, also called the Battle of Bear River and the Massacre at Boa Ogoi, took place on January 29, 1863, between the United States Army and the Shoshone Indians at the confluence of the Bear River and Beaver Creek (now Battle Creek) in what was then southeastern Washington Territory. The site is located near the present-day city of Preston in Franklin County, Idaho. The detachment of the U.S. Army was led by Col. Patrick Edward Connor as a part of the Bear River Expedition against Shoshone Chief Bear Hunter.