Rowen, the Confederate Army had some pretty horrendous prisoner of war camps, of which Andersonville is certainly the best known. Many of the Union Army POW camps were not much (if any) better. Although starvation was rarely an issue in the north, Southern soldiers were unready for northern winters and the winter clothing provided to them was, at best, inadequate. However, concentration camps, in the sense of 'concentrating' noncombatants for significant periods of time, were not a feature of the American Civil War.