The Big Flag (1954)

For naval officers, duty is paramount. Lieutenant Favrel embodies this commitment, having promised his wife Simone his constant presence. However, a final mission aboard a training cruiser forces him to confront his deep connection to the sea. Meanwhile, cadet Pierre Hardouin recognizes sailing as his true calling. Madeleine, his beloved, is afraid of being left alone during his mission, but ultimately accepts the situation and marries Pierre.