Throughout history the term "Bullpen" referred to various detention facilities, usually ones seriously overcrowded with prisoners. In particular military prisons were often referred to in this way. During the Civil War, Andersonville Prison was called "the Bullpen" by inmates. Japanese relocation camps also had this label. Overcrowded jails in the 19th century, often filled with union organizers, also earned the title of "Bullpen". In baseball the seats right over the Bullpen were for the "cheap crowd" -" three for a quarter crowd" - which when roped off by chicken wire were designated for "colored only" spectators.