Like a usual nolan film Every department had worked brilliantly. But what lacked here is a powerful story. when i close my eyes and think about the movie, What i see is the editing, camera technique and cinematography which were brilliant and inspiring. But the soul of a film is its story. Unfortunately the story of dunkirk is very simple and weak for a film. Thats why after watching the film we feel something not right. Nolan could have taken a different war story which is much more intense, engaging and nail biting and this story should hunt us after watching the film and that makes a movie a masterpiece. and this didn't happened with dunkirk.