The film highlights the efforts of a middle-class English family to survive the bombings and early days of the war. A German soldier stops by their house, then her husband takes off to help evacuate the British troops from Dunkirk -- a pivotal part of salvaging the British army.
This film won six Oscars including Best Actress, Best Director, and Best Picture. It has also landed on the National Film Registry.
Now people will tell you this film is full of propaganda -- but what movie coming out of Hollywood during the war didn't have an element or two of propaganda? If you want to get a sliver of what the early days of the war were like, then this is a good one to try. It is a drama...there are few laughs...but it is still a film well worth viewing.