AMS 2 United States. Army Map Service Great Britain. Inter-service Topographical Department Great Britain. War Office. General Staff. Geographical Section. G.S.G.S. 4234 In upper margin: France 1:6,670. Lambert (Zone I) grid. Inset: Lanveoc Poulmic Naval Air Station. Electic power stations, gas workd, oil storage, coal dump, hospitals, cranes, W/T stations are located.