Custer County, Nebraska Custer County, Nebraska Custer County is a county in the U.S. state of Nebraska. As of the 2010 census, the population was 10,939. Its county seat is Broken Bow. The county was formed in 1877 and named after General George Armstrong Custer, who was killed at the Battle of Little Bighorn. In the Nebraska license plate system, Custer County is represented by the prefix 4 (it had the fourth-largest number of vehicles registered in the county when the license plate system was established in 1922). According to the U.S. Census Bureau, the county has a total area of , of
George Armstrong Custer Michigan Infantry across the Chickahominy River above New Bridge. The attack was successful, resulting in the capture of 50 Confederate soldiers and the seizing of the first Confederate battle flag of the war. McClellan termed it a "very gallant affair" and congratulated Custer personally. In his role as aide-de-camp to McClellan, Custer began his life-long pursuit of publicity. Custer was promoted to the rank of captain on June 5, 1862. On July 17, he was reverted to the rank of first lieutenant. He participated in the Maryland Campaign in September to October, the Battle of South Mountain on September 14,