Lt. Col. Kirby Yorke is posted on the Texas frontier to defend settlers against depredations of marauding Apaches. Col. Yorke is under considerable stress by a serious shortage of troops of his command. Tension is added when Yorke's son (whom he hasn't seen in fifteen years), Trooper Jeff Yorke, is one of 18 recruits sent to the regiment.
Unfortunately the movie Rio Grande is not yet available on HBO Max.
| Writing | James Kevin McGuinness | Screenplay |
| Writing | James Warner Bellah | Author |
| Sound | Victor Young | Original Music Composer |
| Art | Frank Hotaling | Art Direction |
| Camera | Bert Glennon | Director of Photography |
| Directing | John Ford | Director |
| Production | John Ford | Producer |
| Editing | Jack Murray | Editor |
| Production | Merian C. Cooper | Producer |
| Sound | Dale Evans | Songs |
| Sound | Stan Jones | Songs |
| Art | John McCarthy Jr. | Set Decoration |
| Sound | Howard Wilson | Sound |
| Art | Charles S. Thompson | Set Decoration |
| Costume & Make-Up | Peggy Gray | Hairstylist |
| Directing | Cliff Lyons | Second Unit Director |
| Directing | Wingate Smith | Assistant Director |
| Crew | Frank McGrath | Stunts |
| Crew | Everett Creach | Stunts |
| Crew | Chuck Roberson | Stunts |
| Crew | Terry Wilson | Stunts |
| Crew | Cliff Lyons | Stunts |
| Crew | Bob Rose | Stunts |
| Crew | Barlow Simpson | Stunts |
| Crew | Jack N. Young | Stunts |
| Sound | Earl Crain Sr. | Sound |
| Costume & Make-Up | Bob Mark | Makeup Supervisor |
| Crew | Howard Lydecker | Special Effects |
| Crew | Jerry Brown | Stunts |
| Crew | Fred Kennedy | Stunts |
| Crew | Theodore Lydecker | Special Effects |
| Camera | Archie Stout | Second Unit Director of Photography |
| Crew | John Hudkins | Stunts |
| Crew | Chuck Hayward | Stunts |
| Crew | Norm Taylor | Stunt Double |
| Costume & Make-Up | Adele Palmer | Costume Design |
| Editing | Barbara Ford | Assistant Editor |
