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 of Inquiry in 1879 conflicts with the archaeological evidence collected at the battlefield. Field data showed that possible extractor failures occurred at a rate of approximately 1:30 firings at the Custer Battlefield and at a rate of 1:37 at the Reno-Benteen Battlefield. Historian Thom Hatch observes that the Model 1873 Springfield, despite the known ejector flaw, remained the standard issue shoulder arm for US troops until the early 1890s. when the copper-cased, inside-primed cartridges were replaced with brass. Soldiers under Custer's direct command were annihilated on the first day of the battle (except for three Crow scouts and several troopers