People today get POW camps and Konzentrationslagers (concentration camps) mixed up. They were not the same things, at all. BTW, the reason the US Army Air Forces made their enlisted crewmen Staff Sergeants and above was because the Luftwaffe treated prisoners better the higher your rank was.
Robert Clary (Frenchie) is a Jew saw Buchenwald and Auschwitz up close and personal from the inside. He was the only surviving one of 12 members of his family.
http://en.wikipedia.org/wiki/Robert_Clary
Werner Klemperer fled Germany in 1935 and ended up entertaining troops in the Pacific theater. His cousins Otto was a composer and Victor survived in Germany due to his marriage to a German socialite. He wrote extensively on how the nazis convinced Germany to give them power.
http://en.wikipedia.org/wiki/Werner_Klemperer
John Banner (Shultz) also Jewish was lucky enough to be in Switzerland when the nazis seized his native Austria.
http://en.wikipedia.org/wiki/John_Banner