Character mistake: Flight Lieutenant Williams is addressed as "Lieutenant" a couple of times. RAF (or RNZAF) flight lieutenants are always addressed by their full rank.
Character mistake: The crew deride Garrett's title of Flight Officer, claiming that she can't have it because she hasn't flown in combat. In fact, Flight Officer was a genuine WAAF rank corresponding to Flight Lieutenant. Many RAF officers holding the ranks of Flight Lieutenant, Flying Officer, and Pilot Officer were not aircrew, despite their titles.
