I watched a documentary on a northern prison camp from the civil war. What they did to the southern troops was dispicible.
Yep, Andersonville wasn’t confined to the South. Many Rebel soldiers died of exposure in prison camps around Chicago, in prison ships scattered around the North.
I've seen documentaries of Southern POW camps. It wasn't any better. Neither side can claim any honor in the way they treated their prisoners. Both sides ran death camps.