The beginning of the movie isn't bad but after about 45 minutes the movie starts to bore: it lacs a continuing and understandable storyline; similar scenes are repeated too many times and the "music" in some scenes starts to irritate. The conversations between the well known actors are reduced to a minimum. The director missed the opportunity to add historical information, maps, a good timeline, a view from the German perspective, it all would have added to the quality of the movie. To us Dunkirk is a missed chance: the operation succeeded, the movie is a disaster.