A by-the-book Captain is ordered to capture a strategic village in Italy. The Italian soldiers are willing to surrender, if they can have a festival first. The lieutenant convinces the Captain this is the only way. Because of aerial reconnaissance, they must look like they are fighting. To sort this out an intelligence officer is sent in. Meanwhile the festival gets complicated with the Mayors daughter.
You can now watch What Did You Do in the War, Daddy? online on the following streaming providers in the United States.
| Directing | Blake Edwards | Director |
| Writing | William Peter Blatty | Screenplay |
| Writing | Maurice Richlin | Story |
| Writing | Blake Edwards | Story |
| Production | Dick Crockett | Associate Producer |
| Production | Owen Crump | Executive Producer |
| Production | Blake Edwards | Producer |
| Sound | Henry Mancini | Original Music Composer |
| Camera | Philip H. Lathrop | Director of Photography |
| Editing | Ralph E. Winters | Editor |
| Production | Harvey Clermont | Casting |
| Art | Fernando Carrere | Production Design |
| Art | Reg Allen | Set Decoration |
| Art | Jack Stevens | Set Decoration |
| Costume & Make-Up | Jack Bear | Costume Design |
| Costume & Make-Up | Susan Germaine | Hairstylist |
| Costume & Make-Up | Allan Snyder | Makeup Supervisor |
| Costume & Make-Up | Lynn F. Reynolds | Makeup Artist |
| Crew | Gene LeBell | Stunts |
| Crew | Glenn R. Wilder | Stunts |
| Crew | Charlie Picerni | Stunts |
| Crew | Bob Herron | Stunts |
