Although Michael Caine reverts to type as a former soldier in real life (he served in Germany and Korea) when he salutes the Germans, he does salute in the correct naval fashion near the end of the film.
One continuity goof I spotted was that the black Afghanistan veteran first appears wearing a blazer with a regimental badge, then later when Bernard advises him (rather harshly) to get help for his PTSD the badge has disappeared from his blazer.
Being picky, I doubt that Bernard's girlfriend would have been allowed to run unchallenged from the armaments factory (where she appears to be packing cartridges) to watch the bombers go in over France - discipline was much stricter in those days and there would have been guards.
One continuity goof I spotted was that the black Afghanistan veteran first appears wearing a blazer with a regimental badge, then later when Bernard advises him (rather harshly) to get help for his PTSD the badge has disappeared from his blazer.
Being picky, I doubt that Bernard's girlfriend would have been allowed to run unchallenged from the armaments factory (where she appears to be packing cartridges) to watch the bombers go in over France - discipline was much stricter in those days and there would have been guards.