When Willie Comes Marching Home (1950)

At the onset of World War II, Bill Kluggs (Dan Dailey) enlists before anyone else in his town, which makes his family very proud. However, after training, Bill gets assigned to be an instructor at a base back in his hometown. Seeing scores of other soldiers go off to fight, Bill is eager to leave and feels frustrated at being bound stateside. One day, when Bill is tapped to replace an ill soldier on a secret mission, he sees his chance to be a hero, but it doesn't go quite according to plan.