Thing is 502 by this time was an SS Abteilung former SS102 who were not in the Ardennes offensive and the original 502 had become 511, as I said earlier there were only 2 Tiger Abteilung in the Ardennes, if you want to research this subject properly then here is a good start http://www.tiif.de/index.php?sid=75a...73a5cb01dc42c2 what you wont find is fictitious pictures and information like you have in your book.

You say your Grandfather served in a Jagdtiger Abteilung, which was it purely out of interest