'Dirtier By the Dozen' by Brain Clemens

Steed, Gambit and Purdey are assigned the task of locating General Stevens, who mysteriously vanished after performing a spot-check on ‘Mad Jack’ Miller's 19th Commando unit. Recovering some film from a dead agent, Gambit discovers that the footage is of a British Army regiment fighting all over the world. Meanwhile, Purdey visits a pub near the base, and is promptly arrested. Steed, Gambit and Purdey discover that ‘Mad Jack’ is preparing to raid the Middle East using his regiment as a secret gang of mercenaries; he plans to start World War III by leaving Stevens' body behind to implicate the British Army. Steed, Purdey and one-man-army Gambit take on the soldiers, and save the day.

Patrick Macnee (John Steed), Gareth Hunt (Mike Gambit), Joanna Lumley (Purdey), John Castle (Colonel Miller), Shaun Curry (Sergeant Bowdon ), Stephen Moore (Major Prentice ), Alun Armstrong (Harris), Ballard Berkeley (Colonel Foster ), Michael Barrington (General Stevens ), Michael Howarth (Tony Noble ), John Forbes-Robertson (Doctor), Brian Croucher (Terry), John Labanowski (Keller), David Purcell (Orderly), Francis Mughan (Freddy), Richard Derrington (Turner)*, John Challis (Soldier)*, Colin Skeaping (Harris)*
*Unbilled

Directed by Sidney Hayers
Produced by Albert Fennell and Brian Clemens

TX:
LWT - 7th January 1977

Notes:
*Featuring John Steed, Mike Gambit and Purdey