What was custards rank at the time of his death?

At the time of his death in 1876, George Armstrong Custer held the rank of Lieutenant Colonel in the United States Army. He was most well-known for his role in the American Civil War and the Indian Wars, particularly for his leadership at the Battle of Little Bighorn, where he was killed. Custer's rank and reputation were significant factors in his military legacy, despite the controversial outcomes of some of his engagements.