this type of helmet is commonly associated with the RAF during the period of the Battle of Britain, this particular example was issued in December 1941 to US national, Edward Goshorn. Goshorn volunteered to serve with the Royal Canadian Air Force (RCAF), and as a sergeant pilot was assigned to training duties as an instructor, teaching Army glider pilots in the use of Horsa gliders. With 400 miles logged over a period of five months in gliders and tow aircraft (Hawker Hector, Halifax) Goshorn was eventually assigned to a Spitfire squadron in June 1942. Later he transferred to the US Navy and flew the Grumman F6F Hellcat from aircraft carriers in the Pacific. Goshorn subsequently went on to serve in the Korean War, retiring with the rank of Commander after 24 years. The B Type leather helmet was the standard flying equipment headdress used by RAF aircrew between 1936 and 1941, before being replaced by the Type C. With no integral wiring, the helmet was to be used in conjunction with either Gosport receivers or radio telephone receivers, the rubber inserts supporting these components for a firm fit and also to reduce noise interference. A Type D oxygen mask (fitted with a Type 19 microphone) would be fitted to the two pairs of metal fasteners fitted either side of the face aperture.