If I may add to your great list, three films about the bravery of civilians:
* "Rome, Open City" (1945 directed by Roberto Rossellini, written by Fellini, starring Anna Magnani. Filmed on the streets of Rome during the last days of WW2.)
* "The Human Comedy" (1943, directed by Clarence Brown, written by William Saroyan, starring Mickey Rooney. WW2 homefront from the kids' viewpoints. May be maudlin by today's standards, but I saw it on TV when I was a kid and never forgot it. )
* "This Land is Mine" (1943, directed by Jean Renoir, starring Charles Laughton. About a schoolteacher in German-occupied France. I think it's based on the story "The Last Lesson" by Alphonse Daudet, and a 1918 silent of the same name.)
I do not recall Rome, Open City, but I do The Human Comedy and This Land is Mine. Both of those need to be on the list. Thanks for ringing my memory bell...