It seemed a simple job; hop across to Belgium and find out what was causing strange magnetic field disturbances in the Ardennes region. So simple did it seem, that the Convict Commandos thought they might have time for a bit of relaxation along the way.

Trouble, though, followed Britain’s most dangerous special missions unit like seagulls follow a trawler, and it wasn’t long before they were caught in a net thrown by advancing German forces.