"Attempts to escape Oflag IV-C" . "Colditz Cock" . "attempts to escape Oflag IV-C" . "Lieutenant Bouley" . "lucky few who escaped Colditz" . "attempting to escape Colditz" . "\\\"Tea Chest Escape\\\"" . "successful escape attempts" . . "Oflag IV-C" . "escape" . "Hid inside" . . "William A. Millar" . . "Attempts to escape Oflag IV-C" . . "the French Tunnel" . . "Escaped inside mattress" . "Canteen Tunnel" . . . . "Franz Josef Attempt" .