George Armstrong Custer was a United States Army officer and cavalry commander in the American Civil War and the American Indian Wars. Raised in Michigan and Ohio, Custer was admitted to West Point in 1857, where he graduated last in his class in 1861. With the outbreak of the Civil War, Custer was called to serve with the Union Army.
Custer developed a strong reputation during the Civil War. He participated in the first major engagement, the First Battle of Bull Run on July 21, 1861, near Washington, D.C.