This is a good movie. I liked how it was set in three parts: in the air, on the land and in the sea. Once I twigged to it I also enjoyed how the three parts were interlinked and backtracked.
The initial scene and how the gun fire turned into the film score I found annoying, but it ceased to be noticeable after this. I think I'd been listening out for the high pitch of the German machine gun which is quite different to the drum/bass line that eventuated.
The story was secondary to the visuals, but the cinematography built structure with the interleaving of the air, land and sea. Occasionally this was let down by positioning of the vessels and men close and then distant, but this would also be part of the backtracking of the time lines.
The air segments were the best. The naval segments impressive and the land, with its large crowds, was seamless.
This was not a movie about the battle, but about the rescue. No heroes, just people doing their duty. No glory, just plenty of the horror of war. It might not have been intentional, but by the end all the soldiers started to look the same, further emphasising the absence of glory and heroes.