After seeing this on IMAX with my movie-theatre working friend and reading many comments on Facebook of which many of them expressed confusion of what was going on in the movie, I have to admit I had the same feeling while watching it with my just-mentioned friend. I also fell asleep at parts of the film though the loud sound effects kept me from staying asleep during most of it. In summary, there were some exciting scenes but I didn't get the characterizations that were depicted as clearly as I would have liked. So that's a partial recommendation for Dunkirk.