The Battle of the Little Bighorn, fought on June 25-26, 1876, was a significant conflict between the U.S. Army, led by Lieutenant Colonel George Custer, and a coalition of Native American tribes, primarily Lakota Sioux and Cheyenne. This battle marked a pivotal moment in the ongoing struggle over land and sovereignty, reflecting the shifting alliances among Native tribes as they united against encroaching settlers and U.S. military forces.