Black and white movie I think similar to Casablanca

10 or more years ago I was in a film class and they showed a clip of a black and white movie. The premise sort of reminded me of Casablanca. It was after or during a war and in an exotic place.
Really the only detail I remember is when you see the actress (I'm assuming love interest) she has on a large hat and is brunette.

It's been driving me crazy trying to remember what this movie is! Any suggestions would be really appreciated.

Contraband - but it's based in England

L'amant

To Have and Have Not (1944) ?

I think this could be it! I'll have to watch it to make sure! Thank you so much!!

I checked the cast of Contraband, and the actor who played Major Strasser in Casablanca, Conrad Veidt, was the lead actor in Contraband. Maybe that's the tie-in you remembered with Casablanca.

I'm pretty sure it is Contraband! Thank you.