G.I. Honeymoon (1945)

In this romantic comedy, set during WW II, an newlywed army couple are unable to consummate their marriage, as on their wedding night the husband is called away to sentry duty. Later they try again, but as he has just completed a 37-mile hike, he finds himself too tired to work up any enthusiasm for conjugal bliss. Fortunately, the bride's understanding aunt intervenes with the young man's colonel and the frustrated couple is at last able to share a night of love.