Victory Day (The Battle of the Little Bighorn – 1876)

The Battle of the Little Bighorn—also called Custer’s Last Stand or the Battle of Greasy Grass—marked the most decisive Native American victory and the worst U.S. Army defeat in the long Plains Indian War.

Under skies darkened by smoke, gunfire and flying arrows, 210 men of the U.S. Army’s 7th Cavalry Unit led by Lt. Colonel George Custer confronted thousands of Lakota Sioux and Northern Cheyenne warriors on June 25, 1876, near the Little Big Horn River in present-day Montana. The engagement was one in a series of battles and negotiations between Plains Indians and U.S. forces over control of Western territory, collectively known as the Sioux Wars.

In less than an hour, the Sioux and Cheyenne had won the Battle of the Little Bighorn, killing Custer and every one of his men.

Sourced from https://www.history.com/news/little-bighorn-battle-facts-causes