Hi folks, I was wondering if anyone could help me with identifying this german unit from WW2. Picture is of my wife's Great Uncle, he is the one sat on the front row extreme right. The only details I have is that he was a prisoner of war in france where he was held by some jock regiment at an "aerodrome". I am pretty sure he was with a Panzer regiment but that is second hand info. The first two digits on his left hand shoulder badge read 17 and I believe the third digit is 3. If anyone could shed any light on any aspect of the picture then it would be much appreciated, no matter how trivial. Oh and any ideas what the R.A.D was or stood for?