The working-class Smiths change their initially sunny views on World War I after the three boys of the family witness the harsh reality of trench warfare.
You can now watch Oh! What a Lovely War online on the following streaming providers in the United States.
| Directing | Richard Attenborough | Director |
| Writing | Joan Littlewood | Musical |
| Writing | Len Deighton | Screenplay |
| Editing | Kevin Connor | Editor |
| Production | Miriam Brickman | Casting |
| Camera | Gerry Turpin | Director of Photography |
| Production | Brian Duffy | Producer |
| Art | Raymond Hawkey | Title Designer |
| Production | Richard Attenborough | Producer |
| Production | Bryan Coates | Location Manager |
| Costume & Make-Up | Anthony Mendleson | Costume Design |
| Art | Donald M. Ashton | Production Design |
| Art | Harry White | Art Direction |
| Production | Mac Davidson | Associate Producer |
| Production | John Comfort | Production Manager |
| Sound | Tom Buchanan | Boom Operator |
