Army intelligence officers. The first of these courses started on 28 October 1940 and was three weeks in duration. This series continued without interruption and in 1942 developed into the RAF Intelligence School. In September 1942, the training school moved to Caen Wood Towers (Caenwood Towers), Highgate (this building was later renamed Athlone House). By this time it was clear to the Air Staff that intelligence was a positive and vital element affecting Air Ministry policy, strategy and planning, so the RAF Intelligence School was officially constituted and given a proper home at Caen Wood Towers. The site was set up as Royal Air Force Station Highgate around grounds and outbuildings of the Caen Wood estate. This included accommodation, messing, equipment stores and a medical centre. Because of the sensitivity of intelligence and covert operations during the war, the site was not made fully public and it operated under the guise of an RAF convalescence hospital. A number of different courses were run lasting between five days and three weeks, teaching Air Intelligence, Escape and Evasion, and Basic Intelligence Analysis for direct entrants to intelligence work. The majority of the instruction was given by visiting specialists (from Air Ministry, MI-6, MI-9, Central Interpretation Unit Medmenham and Station "X" at Bletchley Park.) The unit was soon awarded a badge (crest) as a proof of the high official regard for the value of the school. The badge consisted of a Sphinx, denoting wisdom, backed by a sun in splendour, depicting elucidation, with the motto Praemonitus Praemunitus which translates as "Forewarned is Forearmed". In 1943, the Unit was transferred for administrative purposes to No. 28 Group RAF under RAF Technical Training Command. Additional courses were added for Security, Air Intelligence for RAF Bomber Command, a Far East Course and Air Intelligence for Senior Officers. During the period from November 1939 to September 1945, 7,086 Officers of the British Services (including dominion and Allied Forces attached to the RAF) attended over 372 courses. In late 1944, the school was hit twice by German V-1 flying bombs causing damage to the buildings and injuring a number of staff. After the Second World War Following the end of the war, training continued at RAF Highgate until 1948 when the Air Ministry decided that the School should move to the Air Ministry building as they were de-requisitioning the property. The Branch was split up into Administrative and