Caught selling stolen guns, three Confederate soldiers get a reprieve from the firing squad, provided they go into Mexico on a mission to recover stolen gold belonging to the Confederacy.
Unfortunately the movie Professionals for a Massacre is not yet available on HBO Max.
| Directing | Nando Cicero | Director |
| Writing | Jaime Jesús Balcázar | Screenplay |
| Writing | Enzo Dell'Aquila | Screenplay |
| Writing | Roberto Gianviti | Screenplay |
| Writing | José Antonio de la Loma | Screenplay |
| Camera | Francisco Marín | Director of Photography |
| Editing | Teresa Alcocer | Editor |
| Production | Sergio Borelli | Line Producer |
| Production | Oreste Coltellacci | Producer |
| Writing | Roberto Gianviti | Story |
| Writing | Jaime Jesús Balcázar | Story |
| Writing | Enzo Dell'Aquila | Story |
| Writing | José Antonio de la Loma | Story |
| Sound | Carlos Pes | Original Music Composer |
| Production | Jenis Rodriguez | Production Manager |
| Production | Salvatore Scarfone | Unit Manager |
| Production | Enrique Uviedo | Unit Manager |
| Production | Lamberto Palmieri | Production Secretary |
| Editing | Renato Cinquini | Editor |
| Directing | Stefano Rolla | First Assistant Director |
| Directing | Federico Canudas | First Assistant Director |
| Camera | Joe D'Amato | Camera Operator |
| Camera | Francisco Marín Jr. | Assistant Camera |
| Sound | Umberto Picistrelli | Sound |
| Art | Juan Alberto Soler | Production Design |
| Costume & Make-Up | Carlo Gentili | Costume Design |
| Costume & Make-Up | Sergio Angeloni | Makeup Artist |
| Costume & Make-Up | Adrián Jaramillo | Makeup Artist |
| Costume & Make-Up | Lina Cassini | Hairstylist |
| Costume & Make-Up | Hipólita López | Hairstylist |
| Camera | Máximo López | Still Photographer |
