I thought I knew the titles of just about all British war films (and had seen most of them), but for some reason I had never even heard of this one. This made me suspect that it wasn't very good, when I saw it advertised on Amazon, but I decided to buy it anyway, on the strength of the good reviews it seemed to be getting. How glad I am that I did! It is absolutely superb! It is brilliantly directed, so that it is gripping from first moment to last, and so utterly realistic and consistently interesting (it reminded me a little in that respect of the best parts of the recent "Band of Brothers"). I only ever bother to write reveiews of products that I think have been somewhat overlooked or under-appreciated, or which are surprisingly good, and "Dunkirk" falls into all those categories. It is, also, incidentally, educative, in that it deals with that part of World War II which has probably had least attention from film-makers, namely the early days leading up to the fall of France. What, precisely, was the British Expeditionary Force trying to do, and where did they get to before they were beaten back? You will get some idea of the answers to these questions from this film. You will, also, I think, get a pretty good idea of what it was like to be an infantryman at the time.
I must also mention the special effects. For a modern film they would be very good indeed, for a film made in the 1950s they are simply amazing - gunfire, bombs, explosions, ships sinking - all horribly realistic and terrifying. For anyone wondering whether or not to buy this film, hesitate no longer: it is simply one of the best war films ever made!