The Windmill (film)

The Windmill is a 1937 British drama film directed by Arthur B. Woods and starring Hugh Williams, Glen Alyn and Henry Mollison. During the First World War, the German adopted daughter of a Belgian innkeeper tries to balance her loyalty to her father, who is a spy for the Germans, and her love for a British soldier billited in their inn. It was based on a novel by John Drabble.

Source: Wikipedia