If you have seen Atonement then you might have a sense of how the evacuation Dunkirk truly was. If you have seen Saving Private Ryan you would appreciate how visceral WW2 was. To try and represent Dunkirk with a single ship and a minuscule single file of soldiers was pathetic. To film said ship and not even organise your extras in the tighter framed shots so they were at least three deep is failing movie making 101. Then to film soldiers on board a train carriage with British Rail livery from the 1980s when there are classic rail carriages across the UK that were at least from the correct decade is just lazy. How did this film cost so much to make?? Nolan's obsession with practical effects over what can be achieved with a modicum of CG is just zealotry.