The document summarizes several military prisons during the Civil War. Alton Prison in Illinois held up to 1,750 Confederate prisoners and saw 6-10 deaths per day from disease. Fulton County Jail in Atlanta held 150 Union soldiers who were transferred there due to overcrowding. Camp Oglethorpe in North Carolina housed officers and enlisted men in sheds and stalls. Johnson's Island Prison in Ohio operated from 1862 to 1865, holding up to 3,224 Confederate prisoners at its peak. Alcatraz Island Military Prison's population increased during the Civil War to hold prisoners from other posts and civilians accused of treason.