History of Montana degree of longitude northward to the boundary line of the British possessions. The boundaries of Montana territory did not change during its existence. Montana was admitted to the Union as the state of Montana on November 8, 1889. The Battle of the Little Bighorn—also called Custer's Last Stand and the Battle of the Greasy Grass—was an armed engagement between a Lakota (Sioux)-Northern Cheyenne-Arapaho combined force and the 7th Cavalry of the United States Army. It occurred June 25–June 26, 1876, near the Little Bighorn River in eastern Montana Territory near present-day Hardin, Montana, on land that today is part of
Little Wolf the Little Bighorn, but played a part before and after the battle. Some scouts from his camp apparently found some food left behind by Custer's attack force, and were observed by U.S. military scouts. This fact was reported to Custer, who incorrectly assumed he had been discovered by the main camp of Sioux and Cheyenne on the Little Bighorn, and urgently pressed on with his attack, trying to prevent the escape of the Indians. After the battle, Little Wolf arrived and was detained and almost killed by the angry Sioux, who suspected he was scouting for the whites. Only his