A USAF colleague on my Staff College course at Bracknell had been shot down and posted missing. He was not notified as a POW. Over time he was presumed dead. Then somebody recognized him on a propaganda clip (just before Christmas, I think). He was eventually released and reunited with his family. He and his wife related their respective experiences and emotions to an enthralled audience of fellow students and their wives. It was a very moving experience. Sorry my memory is a bit hazy after all these years - maybe someone can fill in the gaps?