Het meisje met het rode haar, The Girl with the Red Hair..1981 ( Englisch Subtitles )
Perusing Feedly, I come across a story about a woman who was in the resistance during WW2. That sounds a whole lot like a movie I saw a while back (above). Turns out they are different women:
I remember the film as being a grim little story, full of the basics of how an underground hit squad operates.
Funny thing is I remember seeing this movie with my wife, but I didn't meet my wife until a couple of years after the film was released. It's not available on Netflix, so I suppose this means we watched it on VHS we got from the local Blockbuster.