Royal Air Force Membury or more simply RAF Membury is a former Royal Air Force station built in the civil parish of Lambourn in Berkshire, England. The airfield is located approximately north-northwest of Hungerford, at the Membury services stop of the M4 motorway; about west-southwest of London. The airfield also lies immediately next to the Iron Age hill fort of Membury Camp. Opened in 1942, it was used by both the Royal Air Force (RAF) and United States Army Air Forces (USAAF). During the war it was used by several combat units with varying missions. It was also a major supply and maintenance depot. After the war, it was a private airport until the construction of the M4 motorway in the 1960s when it was closed. Today the remains of the airfield are located on private property with the former technical site now being an industrial estate (Membury Business Park). History USAAF use Membury was known as USAAF Station AAF-466 for security reasons by the USAAF during the war, and by which it was referred to instead of location. Its USAAF Station Code was "ME". 3rd Photographic and 67th Observation/Reconnaissance Groups Meanwhile, the Eighth Air Force VIII Ground Air Support Command, the forebear of the reborn Ninth Air Force had designated Membury for use by its reconnaissance units. These were the men of the 3rd Photographic and the 67th Observation Groups, who arrived at Membury on 7 and 8 September 1942. The 3rd consisted of the 5th, 12th, 13th, 14th, 15th and 23d squadrons, however the group's air echelons were still in the United States at Colorado Springs AAF, Colorado. Whilst at RAF Membury, the group was reassigned to the Twelfth Air Force and moved to RAF Steeple Morden in Cambridgeshire during October prior to its movement to North Africa. The 67th Observation Group arrived at Membury from Esler AAF Louisiana and consisted of the following operational squadrons: 12th Observation/Reconnaissance Squadron 107th Observation/Reconnaissance Squadron 109th Observation/Reconnaissance Squadron 153rd Observation/Reconnaissance Squadron At the time of the transfer to Ninth Air Force, the group was redesignated the 67th Reconnaissance Group. At the time, the 107th and 109th Squadrons were converting to North American P-51A Mustangs. However before this was completed, the 107th Squadron was moved to nearby RAF Aldermaston. 6th Tactical Air Depot During the winter of 1942/1943, the Air Depot site was occupied by the 7th and 16th Air Depot Groups,