With the Civil War ending, so ended the Confederate prison at Andersonville, known as Fort Sumter. Built in early 1864, by late February it was receiving 400 new prisoners a day. By June, 26,000 were penned in an area designed to hold 10,000. Ultimately around 45,000 captured US soldiers were sent to Andersonville. Of those, almost 13,000 died from disease, malnutrition, or exposure.