I just watched Dunkirk on Sky Cinema, apparently it was the highest grossing WW2 film and the critics raved about it but I found it disjointed and difficult to follow. It jumps back to previous scenes three or four times but from different viewpoints. One minute you're with a Spitfire in a dogfight in broad daylight then suddenly you're on a rescue ship at night
I prefer the 1958 version with John Mills!