The Battle of the Little Bighorn, also known as Custer's Last Stand and, by the Indians

Native Americans in the United States

Native Americans in the United States are the indigenous peoples in North America within the boundaries of the present-day continental United States, parts of Alaska, and the island state of Hawaii. They are composed of numerous, distinct tribes, states, and ethnic groups, many of which survive as...

 involved, as the Battle of the Greasy Grass, was an armed engagement between combined forces of Lakota, Northern Cheyenne and Arapaho

Arapaho

The Arapaho are a tribe of Native Americans historically living on the eastern plains of Colorado and Wyoming. They were close allies of the Cheyenne tribe and loosely aligned with the Sioux. Arapaho is an Algonquian language closely related to Gros Ventre, whose people are seen as an early...

 people against the 7th Cavalry Regiment

U.S. 7th Cavalry Regiment

The 7th Cavalry Regiment is a United States Army Cavalry Regiment, whose lineage traces back to the mid-19th century. Its official nickname is "Garryowen," in honor of the Irish air Garryowen that was adopted as its march tune....

 of the United States Army

United States Army

The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

. It occurred on June 25 and June 26, 1876, near the Little Bighorn River

Little Bighorn River

The Little Bighorn River is a tributary of the Bighorn River in the United States in the states of Wyoming and Montana. The Battle of the Little Bighorn was fought on its banks in 1876, as well as the Battle of Crow Agency in 1887....

 in eastern Montana Territory

Montana Territory

The Territory of Montana was an organized incorporated territory of the United States that existed from May 28, 1864, until November 8, 1889, when it was admitted to the Union as the State of Montana.-History:...

, near what is now Crow Agency, Montana

Crow Agency, Montana

Crow Agency is a census-designated place in Big Horn County, Montana, United States and is near the actual location for the Little Bighorn National Monument and re-enactment known as Custer's Last Stand...

.

The battle was the most famous action of the Great Sioux War of 1876 (also known as the Black Hills War).