During the First World War a British unit take up a new position in a trench unaware that the Germans are laying a mine underneath it.
| Actor | Role |
|---|---|
 Mickey BrantfordPvt. Pettigrew | Pvt. Pettigrew |
| CCyril McLaglenCyril McClusky | Cyril McClusky |
 Jack RaineCapt. Wilson | Capt. Wilson |
 Hay PetrieScruffy | Scruffy |
| FFred GrovesPvt. Lomax | Pvt. Lomax |
 Percy ParsonsPvt. Brett | Pvt. Brett |
 Syd CrossleyCpl. Brown | Cpl. Brown |
| HHamilton KeeneOfficer | Officer |