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 partially dismantled), and in it was the body of a Sans Arc warrior, Old She-Bear, who had been wounded in the battle. He had died a couple of days after the Rosebud battle, and it was the custom of the Indians to move camp when a warrior died and leave the body with its possessions. The Lone Teepee was an important location during the Battle of the Little Bighorn for several reasons, including: The first group to attack was Major Reno's second detachment (Companies A, G and M) after receiving orders from Custer written out by Lt. William W. Cooke,