The Great Labrador The Labrador Retriever's keen sense of smell and ability to train have earned him a place in many police and military forces around the world. During World War II, Labrador Retrievers were used throughout Europe to scout fields for undetected land mines. They were credited with many finds and exhibited a stick-to-it-iveness not found in other breeds that were tested for the job. They have also been trained as messengers to cover terrain that is all but impassable by man. Many municipalities currently employ the services of skilled Labrador police dogs. They are primarily called upon for scent-discrimination details, such as tracking criminals in buildings or detecting hidden narcotics, weapons, and bombs. Once a substance has been detected, the dog does not retrieve the material unless specifically ordered by his master, but rather indicates the location to his trainer. This is to insure against possible injury to the dog.