One Man's Hero tells the little-known story of the "St. Patrick's Battalion" or "San Patricios," a group of mostly Irish and other immigrants of the Catholic faith who deserted to Mexico after encountering religious and ethnic prejudice in the U.S. Army during the Mexican-American War. The plot centers around the personal story of John Riley, an Irishman who had been a sergeant in the American Army who is commissioned as a captain in the Mexican army and commands the battalion, as he leads his men in battle and struggles with authorities on both sides of the border
Unfortunately the movie One Man's Hero is not yet available on HBO Max.
| Directing | Lance Hool | Director |
| Writing | Milton S. Gelman | Writer |
| Art | Héctor Romero | Art Direction |
| Art | Enrique Estévez | Set Decoration |
| Costume & Make-Up | Carol H. Beule | Costume Design |
| Costume & Make-Up | Matthew Jacobsen | Costume Design |
| Production | Jaime Comas Gil | Associate Producer |
| Editing | Mark Conte | Editor |
| Production | Joseph Brad Kluge | Associate Producer |
| Production | Mary Jo Slater | Casting |
| Production | Bruce H. Newberg | Casting |
| Production | Paul L. Newman | Co-Producer |
| Production | William J. MacDonald | Producer |
| Camera | Pancho Alcaine | Additional Photography |
| Camera | João Fernandes | Director of Photography |
| Production | Conrad Hool | Unit Production Manager |
| Sound | Ernest Troost | Original Music Composer |
| Art | Peter Wooley | Production Design |
