French Leave (1930)

The pretty young wife of an English captain, in World War One, visits him in his billet in a little town in France, behind the front lines. She poses as the daughter of the French woman who owns the home where her husband has his meals along with his Colonel and a junior officer. The Colonel and the other officer both fall in love with the supposed French mademoiselle, and her husband has a hard time explaining things when he keeps getting caught kissing the landlady's "daughter."