I can add a couple to that list.

How about "It happened here"

A British film made in 1966. It's the story of a German occupied Britain, and the local resistance movement. Can't remember much more than that.

And then there's "The Bridge"

This was a German made film (1959) about a group of teenagers, led by a old sergeant, in the German Army who are sent to guard a bridge of no strategic importance, in 1945. The sergeant goes to find ammo and is picked up as a deserter, leaving the boys to guard the bridge on their own.

Haven't seen either of these in a long, long time.

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Uncommon valor was a common virtue - Admiral Chester Nimitz, after the capture of Iwo Jima