A war between Bolivia and Paraguay is the setting for the stories of flyers involved with both sides in the conflict.
| Actor | Role |
|---|---|
 Jack HoltBob Kent | Bob Kent |
 Antonio MorenoMaj. Tovar Rojas | Maj. Tovar Rojas |
 Mona BarrieTheresa | Theresa |
 Gene LockhartCracker | Cracker |
 Grant WithersMitchell | Mitchell |
 Barry NortonDiaz | Diaz |
 George J. LewisGarcia (as George Lewis) | Garcia (as George Lewis) |
| JJuanita GarfiasPepita | Pepita |
| LLuis Díaz FloresSilvera (as Dias Flores) | Silvera (as Dias Flores) |
 Juan TorenaMilano | Milano |
 Hans Heinrich von TwardowskiOberto (as Hans Von Twardowski) | Oberto (as Hans Von Twardowski) |
| JJosé A. CaraballoCabello (as Jose Caraballo) | Cabello (as Jose Caraballo) |
 Francisco MorenoLeon (as Paco Moreno) | Leon (as Paco Moreno) |
| AAlma RealNurse | Nurse |
| FFrancisco MaránGeneral | General |