This is a great suggestion, and a great, great, great movie. Kind of forgotten now, which is heartbreaking, because it’s suspenseful and exciting and satisfying. Deserves rediscovery.
With a few exceptions, this thread has an understandable bias toward American perspectives in American-made movies, so here’s some other titles to widen the scope.
Skyggen i mit øje (Denmark, 2021). Literally translates as “Shadow in my Eye,” but released to Netflix with the English title “The Bombardment.” Tells the true story of a wartime incident in Copenhagen, in which the Allies attempted to bomb a Gestapo building but accidentally destroyed a nearby school. Harrowing and difficult but worthwhile.
Au revoir les enfants (France, 1967). Translates as “Goodbye children” but never released under that name; you’ll find it only with the French title. Focuses on the sheltering of Jews from Germans at a boarding school. Possibly one of the greatest movies ever made; certainly one of the best French films set during the war.
La Grande Vadrouille (France, 1966). Literally means “The Big Stroll” but released in English territories with the title “Don’t Look Now, We’re Being Shot At” to emphasize the fact that it’s a comedy. Very entertaining (it was the highest grossing movie in France for years, and an enduring much-watched favorite), and also very interesting to see how France used film to process the trauma of its occupation. Tells the story of an English bomber crew that gets lost and crashes in occupied Paris, and which then has to rely on the help of ordinary French citizens to escape German-controlled territory. A very broad comedy, where the French are plucky and courageous and the Germans are boors and buffoons. Most interesting for its insight into national mythmaking; every single French person the British airmen encounter is willing and happy to help resist the Germans (no Vichy loyalists here!).
Edit to add: Forgot to mention, I second the suggestion of Hope and Glory above. Excellent look at the hardship of civilian life in England under Germany’s constant aerial attack.