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 forces, though not equally matched in the number and type of arms, were comparably outfitted, and neither side held a overwhelming advantage in weaponry. Two hundred or more Lakota and Cheyenne combatants are known to have been armed with Henry, Winchester, or similar lever-action repeating rifles at the battle. Virtually every trooper in the 7th Cavalry fought with the single-shot, breech-loading Springfield carbine and the Colt revolver. Historians have asked whether the repeating rifles conferred a distinct advantage on Sitting Bull's villagers that contributed to their victory over Custer's carbine-armed soldiers. Historian Michael L. Lawson offers a scenario based on