Seven Days Leave (1942)

Army private Johnny Grey (Victor Mature) and his company get a week's leave before shipping out. Learning from a radio program that he is heir to $100,000 from his great grandfather, Johnny and three of his fellow soldiers travel to New York to retrieve the inheritance. There they discover a provision that Johnny must marry into the Havelock-Allen family to inherit the money. Johnny, who is already engaged, hesitates -- until he meets the beautiful Terry Havelock-Allen (Lucille Ball).