George Armstrong Custer (December 5, 1839 – June 25, 1876) was a United States Army cavalry commander in the American Civil War and the Indian Wars. Promoted at an early age to a temporary war-time rank of brigadier general, and later made a permanent Lt. Colonel, he was a flamboyant and aggressive commander during numerous Civil War battles, known for his personal bravery in leading charges against opposing cavalry. He led the Michigan Brigade whom he called the "Wolverines" during the Civil War. He was defeated and killed at the Battle of the Little Bighorn, against a coalition of Native American tribes led by the Sioux chiefs Sitting Bull and Crazy Horse, a confrontation popularly known and enshrined in American history as Custer's Last Stand.