Corrected entry: Near the end of the film, the crew of the Sheffield are ordered to stand at attention, salute and "face to starboard!" They are all facing to port, including the captain, who gave the order.
Corrected entry: Throughout the movie, Commodore Harwood is shown wearing Rear Admiral rank insignia. An RN Commodore is identified by a single broad ring and eye.
Corrected entry: When the captured British officer is being transfered from the Altmark to the Graf Spee you can see the Radar rotating on the Spee, but the Germans did not have Radar at this early stage of the war as it was a British invention and only they had it for most of WWll.
Corrected entry: When "HMS Cumberland" finally arrives, the RN crews all cheer the arrival of a 3-funnelled cruiser - but I'm sure there were no turrets visible (so not much use really). Its only a brief shot - was the ship (actress?) on her way to the scrapyard?