Royal Air Force Molesworth or more simply RAF Molesworth is a Royal Air Force station located near Molesworth, Cambridgeshire, England with a history dating back to 1917. Its runway and flight line facilities were closed in 1973 and demolished. New facilities were constructed to support ground-launched cruise missile operations in the early 1980s. It was one of the two British bases to house cruise missiles and a focus for protests. It is now a non-flying facility under the control of the United States Air Force (USAF), and is one of two Royal Air Force (RAF) stations in Cambridgeshire currently used by the United States Air Forces in Europe (USAFE). Molesworth, RAF Alconbury and RAF Upwood were considered the "Tri-Base Area" due to their close geographic proximity and interdependency until RAF Upwood closed in late 2012. RAF Alconbury and RAF Molesworth were the last Second World War era Eighth Air Force airfields in the United Kingdom that were still actively in use and controlled by the United States Air Force. It was from Molesworth on 4 July 1942 that the first USAAF Eighth Air Force mission was flown over Nazi-occupied territory. Today the base is home to the Joint Intelligence Operations Center Europe Analytic Center, and a number of units from the 423rd Air Base Group. Overview Molesworth is home to three Major Command (MAJCOM) branch sites: the United States European Command (USEUCOM) Joint Intelligence Operations Center Europe Analytic Center (JAC), United States Africa Command (USAFRICOM), Intelligence and Knowledge Directorate-Molesworth (J2-M), North Atlantic Treaty Organization (NATO) Intelligence Fusion Centre (IFC), and is garrisoned by the United States Air Force 423rd Air Base Group (423 ABG), located at RAF Alconbury. History First World War The Royal Flying Corps selected a site for an airfield in Huntingdonshire near the village of Old Weston during the First World War. The first flying unit to arrive at the aerodrome was 75 Squadron. No. 75 Squadron flew B.E.2s, a reconnaissance and artillery spotter aircraft which saw extensive combat use over the Western Front, from Molesworth for training and pilot proficiency. The squadron remained at this airfield until September 1917. Second World War RAAF/RAF use At the start of the Second World War the Air Ministry selected the area as the site for what would become RAF Station Molesworth. The airfield was built between 1940 and 1941. The first flying unit was Royal Australian Air Force 460