This rare WWII map was carried by both British (RAF) and American bomber navigators during the initial invasion of Normandy and the Allied D-Day landings in June of 1944. This air map covers southern England, the English Channel, and the Normandy area of operations with a clear view of all the Allied D-Day beaches. Aircrews carried these charts to determine lines of position using a Gee receiver and oscilloscope.The Royal Air Force (RAF) established new chains as the Allies advanced eastward after D-Day. An operator using this chart could determine a fix using two or three lines of position within three or four minutes. Gee was a hyperbolic system that provided short-range navigation and bombing guidance over Britain, western Europe and the northern Mediterranean during World War II. Developed by the British Telecommunications Research Establishment (TRE) under the technical guidance of Robert G.
Both the Royal Air Force Bomber Command and American VIII Bomber Command depended extensively on this technology. A blind bombing system called Gee-H (or GH) used the Gee transmitters along with modified aircraft equipment to create a transponder system that could guide bombers at night or in cloud to within several hundred yards of a target. Another version of this exact map is also featured in the collection of the National Air and Space Museum, Smithsonian Institution. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment".
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