When Harris applies for the position of a radioman in Loggins' army unit, he is hired immediately. While on a mission together in France, they both fall in love with Monique.
| Actor | Role |
|---|---|
 Frank SinatraLieutenant Sam Loggins | Lieutenant Sam Loggins |
 Tony CurtisCaporal Britt Harris | Caporal Britt Harris |
 Natalie WoodMonique Blair | Monique Blair |
 Leora DanaMrs. Blair | Mrs. Blair |
 Karl SwensonThe Colonel | The Colonel |
 Ann CodeeMme. Brieux | Mme. Brieux |
 Eddie RyderCaporal Lindsay | Caporal Lindsay |
| JJacques BertheJean-François Dauval | Jean-François Dauval |
| PPete CandoliTrumpet Player (uncredited) | Trumpet Player (uncredited) |
 Cyril DelevantiBlairs' Butler (uncredited) | Blairs' Butler (uncredited) |
| RRichie KamucaSaxophonist (uncredited) | Saxophonist (uncredited) |
| MMel LewisDrummer (uncredited) | Drummer (uncredited) |
| RRed NorvoVibraphonist (uncredited) | Vibraphonist (uncredited) |
| MMark TapscottCaptain Harrison (uncredited) | Captain Harrison (uncredited) |