Two foreign officers arrive to train at the SAS's headquarters: Captain Hagen is a member of the US Army Rangers and Captain Freund is a member of the West German GSG 9. They are taken to the close quarter battle house and witness an SAS room entry assault. Colonel Hadley introduces them to the SAS man playing the hostage, Captain Peter Skellen, and informs them they will be with Skellen's troop, consisting of Baker, Dennis, and Williamson. During an exercise in the Brecon Beacons, Hadley and Major Steele discover Skellen's troop torturing Hagen and Freund. Skellen is dismissed from the Regiment. The torture and dismissal are a ruse to repaint Skellen as a disgraced former SAS operative, and Hagen and Freund as innocent victims in the scheme.