Tense film draws you to a doomed group.
Those how are veteran war historians will quibble at some parts of Dunkirk, notably the separation of English and French troops in evacuation and the ships used to evacuate them. Dunkirk uses a few conceits to keep you involved. The first, which adds a notable amount of tension to the film, is a ticking clock in the background moving you to the final day. We see intercut scenes from different periods, prior, during and enacting the rout.
Acting is excellent throughout, and versimilitude is achieved with models of aircraft, uniforms, landing stages and so on. Injections of friendship and subsequent loss direct our affection to the sufferers. Harry Styles is more than competent as a young troop and Kenneth Branagh brings integrity and verve to his role as a tired and firm leader. If one oversight might have been addressed, it is the lack of focus on the German side of things in this affair. Our few glimpses are of German fighters and so on, with very explanation of the goings-on at the front.
Overall an excellent war movie meant to be among your top ten, if not top five (It will be hard to dislodge All Quiet on the Western Front, Apocalypse Now, Paths of Glory, Saving Private Ryan and Tora Tora Tora!, among others). Recommend highly a good 8/10.