The Battle of Wolf Mountain, also known the Battle of the Wolf Mountains, Miles's Battle on the Tongue River, the Battle of the Butte and called the Battle of Belly Butte by the Northern Cheyenne, occurred January 8, 1877, in southern Montana Territory between soldiers of the United States Army against Lakota Sioux and Northern Cheyenne warriors during the Great Sioux War of 1876. It was fought about four miles southwest of modern-day Birney, along the Tongue River. In 2001, the Wolf Mountains Battlefield was listed on the National Register of Historic Places.