The Battle of the Little Bighorn, also known as Custer's Last Stand and, by the Native Americans involved, the Battle of the Greasy Grass, was an armed engagement between combined forces of Lakota, Northern Cheyenne and Arapaho people against the 7th Cavalry Regiment of the United States Army. It occurred on June 25 and June 26, 1876, near the Little Bighorn River in eastern Montana Territory, near what is now Crow Agency, Montana.