FIVE GRAVES TO CAIRO has a bum rap: thumbs down for the director (Wilder had so much good ahead of him!) and only a slight thumbs up for some of the actors (von Stroheim's performance as Rommel is a decently charming one!). But in my opinion it's a pretty good WWII film, far better than many others. Excitingly simple, tight fish-out-of-water or mistaken identity, all in a miniature war of its own; and close to the real happenings, not so much for propaganda but instead fineness. Ethnic sillinesses of Italian and native Egyptian aren't great, and the double agent plot tends to get a little convoluted (like THREE KINGS a bit?), but it's mostly swell.
(They grumble about Dunkirk a bit, so maybe Wilder's '43 FIVE GRAVES is a little tighter to Nolan's 2017 DUNKIRK than expected.) Hey, propaganda before the war's even over is much different than nostalgic propaganda.