Actually, it was the Union that maintained a series of concentration camps for escaped slaves during the war. They were called “contraband camps”. Escapes negro slaves (from seceded sates only) were put there and forced to work for the Union Army. Many slaves died of neglect and disease in those camps. The camp system was the brain child of Benjamin Butler, the “Beast of New Orleans”.
I suggest that you too might profit from a reading of the book mentioned in post 94. It is sure to enlighten one about the frequently criminal nature of local Confederate government.
By contrast, the slave power maintained concentration camps for slaves before and during the war. They were called “plantations” and female slaves were routinely raped in them.
And you accuse the Northerners of saying things without backing them up?
http://tennesseeencyclopedia.net/entry.php?rec=305
This notes that escaped slaves had been abandoned by their putative masters as the US Army approached, and the camps were established to give them food and shelter at federal expense, rather than letting them die.