Directed by
| Juan de Orduña | ||
Writing Credits (in alphabetical order)
| Raúl Cancio | ... | (story) |
| Jaime García Herranz | ... | (story) |
| Luis Lucia | ||
Cast (in credits order)
| Alfredo Mayo | ... | El Grajo | |
| Luis Peña | ... | Mauro / Principe Osvaldo de Eslonia | |
| Manuel Luna | ... | Comandante Tudela | |
| Pilar Soler | ... | Leda, la cantinera | |
| Miguel Pozanco | ... | Curro Montoya | |
| Rufino Inglés | ... | Capitán Romero | |
| Arturo Marín | ... | Samuel | |
| Manuel Arbó | ... | Ionescu | |
 |
Fortunato Bernal | ... | Rodete |
|
|
Fernando Galiana | ... | Legionario Rodriguez (as Fred Galiana) |
| Rest of cast listed alphabetically: | |||
|
|
Miguel Pastor | ... | Legionario en trinchera |
|
|
José Sanchiz | ... | Teniente en bar (uncredited) |
Music by
| Juan Quintero | ||
Cinematography by
| Alfredo Fraile | ||
Editing by
| Antonio Cánovas | ||
Set Decoration by
| Emilio Ferrer | ||
Sound Department
| Enrique de la Riva | ... | sound |
Camera and Electrical Department
| Tomás Duch | ... | second assistant camera |
Additional Crew
| Luis Meléndez | ... | military advisor (as Major Luis Meléndez) |
| Captain Prada | ... | military advisor |
| Captain Sentis | ... | military advisor |
| Marcial Torres | ... | military advisor (as Major Marcial Torres) |
