Larkhill's Wartime Locators: Royal Artillery Survey in the Second World War

"Artillery survey suffered during the pacifist inter-war period but the war in North Africa highlighted its importance. By the end of 1942 ten major survey units had been formed. Nine were conventional serving in all the main theatres, including the Far East. They played a key part in victories such as El Alamein, Anzio, Caen and Imphal, with their flash-spotting, sound-ranging and surveying of gun lines. A tenth regiment was secretly involved tracing the flight of Hitlers V1 and V2 rockets...