The concept of the movie to tell the story in overlapping and in the end combining pieces is very good and the sound score supports the action, but that's about it. The pathos in the Spitfire pilots actions at the end when he still shots down a Stuka without fuel and then heroically, almost mystically flying his last meters on the beach and the wrong depiction of military actions are big downsides of the movie. No Heinkel attacks at such low altitude, no Messerschmitt wastes time to shoot on a small boat and ships don't sink so fast. What strikes me most is the poor out-fit of a movie with a 100 mill. Dollar budget. Not much to see on the beach, not much effort to make the ships look as they did back then (except for the smaller ones) and then they was some stuff to see which is by any means modern, e.g. the trains waggons inside was modern style. When you make a movie playing in 1940, you should be more careful with that. So, for me it looks like sort of an concept movie.