Roughly the same number of Union soldiers died in this prisoner of war camp as died in battle at Shiloh: over 13,000. The conditions were horrifying. Disease, vermin, starvation, dehydration, exposure and brutality killed hundreds by the day. Only a small portion of the stockade has been reconstructed, including the north entry gate pictured above, through which about one in three did not come out alive. There is an illustration drawn from the memory of Thomas O’Dea that is absolutely haunting in both its scale and detail. The Union refused a prisoner swap out of concern the confederates would return to battle. One 19 year old prisoner had the job of numbering the dead, and he secretly kept a list of names, regiments and causes of death. Eventually he brought it to the attention of the “angel of the battlefield”, nurse Clara Barton who had petitioned Lincoln to track down missing soldiers. They toured the site and marked over 12,000 graves. Barton went on to found the American Red Cross, and the US ratified the Geneva Conventions the next year. The man in charge of the camp was hung for war crimes. Flags were flying over the National Cemetery before Memorial Day, and burials are still occurring frequently. The visitor center also serves as a memorial and museum to all prisoners of war.