Bletchley Park, made famous during the Second World War as a code breaking centre. In early 1941, Bletchley Park was a base for training dogs to be used for insurgency purposes should Nazi Germany invade Britain. The Airedale Terrier was selected as the most suitable breed. Intelligent, easily trained and capable of navigating long distances unaided. Trained by the wives of Bletchley Park scientists. In a remarkable feat, the Airedales were taught to recognise targets.