Camp Sumter as it was known officially, held more prisoners at any given time than any of the other Confederate military prisons. It was built in early 1864 after Confederate officials decided to move the large number of Federal prisoners in and around Richmond to a place of greater security and more abundant food.
The first prisoners were brought to Andersonville in late February 1864. During the next few months, approximately 400 more arrived each day. By the end of June, 26,000 men were penned in an area originally meant for only 10,000 prisoners. The largest number held at any one time was more than 33,000 in August 1864. Of these almost 13,000 died from disease, poor sanitation, malnutrition, overcrowding, or exposure to the elements.
Far from being a plot the Confederate government simply could not provide adequate housing, food, clothing or medical care to their Federal captives because of deteriorating economic conditions in the South. In fact, the South, could not even provide these things for its own soldiers.
When the War ended, Captain Henry Wirz, the prison's commandant, was arrested and charged with conspiring with high Confederate officials to "impair and injure the health and destroy the lives…of Federal prisoners" and "murder in violation of the laws of war." Such a conspiracy never existed, but public anger and indignation throughout the North over the conditions at Andersonville demanded appeasement. Tried and found guilty by a military tribunal, Wirz was hanged in Washington, D.C., on November 10, 1865. Wirz was the only person executed for war crimes during the Civil War.