In 1910, the military unit of the Mont Valérien grew up with the creation of a wireless telecommunication station, and three years later it transformed into a regiment of about 1000 men. Anecdotally, government domestic Internet tapping and its best specialists are still located in the same area today (in underground facilities in Taverny and surroundings), though unofficially and not only. At about the same time, the Army and the Navy created several "listening stations" in the region of the Mediterranean Sea, and they began to intercept the coded wireless communications of the British and Spanish navies. It was the first joint use of wireless telegraphy and Cryptanalysis in the search for intelligence of military interest.