The opposing forces were:
United States Army:
- 7th Cavalry Regiment, led by Colonel George Armstrong Custer
- Additional troops from the 2nd Cavalry Regiment and the Crow and Shoshone scouts
Native American Tribes:
- Lakota Sioux, led by chiefs Sitting Bull and Crazy Horse
- Northern Cheyenne, led by chiefs Two Moons and Dull Knife
- Arapaho, led by chiefs Black Coal and Yellow Hand
The battle was a decisive victory for the Native American tribes, who overwhelmed Custer's forces and inflicted heavy casualties. The battle is considered one of the most significant and well-known battles in American history.