Andersonville Prison Timeline November 1863Andersonville selected as site for new Confederate prison that will be 16 ½ acres and hold 10,000 prisoners August 1864Prison reaches peak of 32,000 prisoners August 1865Andersonville National Cemetery is dedicated February 1864First prisoners arrive at camp September 1864-Nearby Union forces threaten camp security, many prisoners are moved to other camps November 1865Former prison commandant Captain Henry Wirz hanged June 1864-Camp holds 26,000 prisoners, enlarged to 26 ½ acres April 1865-War ends, camp closes October 1970Designated a National Historic Site by Congress