Yup, sounds bad.
My Grandfather told me a few things about his time in the Russian camps, sounded he was talking about a German Camp too.
Poor food( tiny slice of bread and a cup of soup/stew), prisoners being transfered to other "camps" in trucks that had NO exhaust pipes, etc.
Didn't know about Andersonville but than US history for us was more of a side-subject, we had 3000yrs of european & middle eastern history to cover.
20th Century history was a separate class.