This film was enjoyable to watch for a few reasons. The aerial scenes were quiet enveloping and realistic. The soundtrack will keep you on edge. The acting performances were good enough to convince. The camera work was accomplished. The problems with this film were its lack of graphic realism. Barely a drop of blood can be seen, almost as if a censor had banned the true horrifying visions of war lest it offend or raise the age limit for audiences. Casting a famous boy band member is always a big no no if you expect to be taken artistically serious. It comes across as a gimmicky cameo which just ruins the scenes when that Boy band guy appears. He does an okay job,, but its like putting Madonna on a ship as a nurse,, you look at her acting but think to yourself, oh look Madonna in a world war 2 movie, and this just cuts you out of the movie if you are in anyway engrossed. Christopher Nolan, cop yourself on and stop disrespecting your audience with such cheap gimmicks. Overall, it is worth a watch , but it will never ever be considered as the definitive Dunkirk movie, that is yet to be created.