Operation: Daybreak (1975)

The plot is certainly interesting, even more for quite an important event during the WWII, but the movie doesn't really add anything to the story that cannot be read in a quick glance to the Wikipedia. The cast performs as if they would be robots, with poor dialogues, and the directing feels like if it would be done with a ruler and following a strict method. Not too bad in the latter, but it doesn't feel natural at all.