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
Battle of the Little Bighorn Assistant Surgeon Henry R. Porter. News of the defeat arrived in the East as the U.S. was observing its centennial. The Army began to investigate, although its effectiveness was hampered by a concern for survivors, and the reputation of the officers. Custer's wife, Elisabeth Bacon Custer, in particular, guarded and promoted the ideal of him as the gallant hero, attacking any who cast an ill light on his reputation. The Battle of the Little Bighorn had far-reaching consequences for the Natives. It was the beginning of the end of the 'Indian' Wars and has even been referred to as "the