Andersonville, or Camp Sumter as it was officially known, was one of the largest of many established prison camps during the American Civil War. It was built early in 1864 after Confederate officials decided to move the large number of Federal prisoners kept in and around Richmond, Virginia, to a place of greater security and a more abundant food supply. During the 14 months the prison existed, more than 45,000 Union Solders were confined here. Of these, almost 13,000 died from disease, poor sanitation, malnutrition, overcrowding, or exposure to the elements.
The pen initially covered about 16 1/2 acres of land enclosed by a 15 foot high stockade of hewn pine logs. It was enlarged to 26 1/2 acres in June of 1864. The stockade was in the shape of a parallelogram 1,620 feet long and 779 feet wide. Sentry boxes, or "pigeon roost" as the prisoners called them, stood at 30 yard intervals along the top of the stockade. Inside, about 19 feet from the wall, was the " DEADLINE ," which the prisoners were forbidden to cross upon threat of death. Flowing through the prison yard was a stream called Stockade Branch, which supplied water to most of the prison. Two entrances, the North Gate and the South Gate, were on the West side of the stockade. Eight small earthen forts located around the exterior of the prison were equipped with artillery to quell disturbances within the compound and to defend against feared Union cavalry attacks. The first prisoners were brought to Andersonville in February, 1864. During the next few months approximately 400 more arrived each day until, by the end of June, some 26,000 men were confined in a prison area originally intended to hold 13,000. The largest number held at any one time was more than 32,000- about the population of present-day Sumter County- in August, 1864. Handicapped by deteriorating economic conditions, an inadequate transportation system, and the need to concentrate all available resources on the army, the Confederate government was unable to provide adequate housing, food, clothing, and medical care to their Federal captives. These conditions, along with a breakdown of the prisoner exchange system, resulted in much suffering and a high mortality rate. On July 9, 1864, Sgt. David Kennedy of the 9th Ohio Cavalry wrote in his diary: ' Wuld that I was an artist & had the material to paint this camp & all its horors or the tounge of some eloquent Statesman and had the privleage of expresing my mind to our hon. rulers at Washington, I should gloery to describe this hell on earth where it takes 7 of its ocupiants to make a shadow.'