The novel interweaves the stories of real and fictional characters. It is told from many points of view, including that of
Henry Wirz, the camp commandant, who was later executed. It also features William Collins, a
Union soldier and one of the leaders of the "Raiders". The "Raiders" are a gang of thugs, mainly bounty jumpers, who steal from their fellow prisoners and lead comfortable lives, while other prisoners die of starvation and disease. Other characters include numerous ordinary prisoners of war, the camp physician/doctor, a nearby plantation owner, guards and Confederate civilians in the area near the prison.
Andersonville is clearly based on prisoner memoirs, most notably
Andersonville: A Story of Rebel Military Prisons by
John McElroy. Henry Wirz, who received an injury earlier in the war and never recovered properly, is portrayed not as an inhuman fiend but as a sick man struggling with a job beyond his capacities. ==Characters in
Andersonville==