In February 1864, the Confederate government established Camp Sumter, a large military prison near the small railroad depot of Anderson (now Andersonville) in south-western Georgia, built to house Union prisoners-of-war. In April 1864, Wirz arrived at Camp Sumter and remained there for over a year holding the post of commandant of the stockade and its interior. Wirz was praised by his many superiors and even by some prisoners, and was even recommended for, but not promoted to, major.
12. Page, Haley. (1908). p. 187.
Page, James Madison; Haley, M.J. (1908). The True Story of Andersonville Prison. Neale (2000 reprint by Digital Scanning Inc.).