Why was andersonville prison pertinent to what was going on

From February 1864 until the end of the American Civil War (1861-65) in April 1865, Andersonville, Georgia, served as the site of a notorious Confederate military prison. The prison at Andersonville, officially called Camp Sumter, was the South's largest prison for captured Union soldiers and known for its unhealthy conditions and high death rate. In all, approximately 13,000 Union prisoners perished at Andersonville, and following the war its commander, Captain Henry Wirz (1823-65), was tried, convicted and executed for war crimes.