At the outbreak of war, the Air Ministry recognised the need for formalised Intelligence training and established a number of courses to teach Volunteer Reserve Officers the art of Intelligence analysis. Much of this early training was very simplistic and did little more than introduce those to be employed in intelligence duties to the structure of the secretive organisation and where sources came from. The first series of courses started on 20 November 1939 at Hibbert Road in Harrow. These were short courses of seven days duration giving a broad picture of intelligence in Commands, Groups and Stations. After five of these courses had been run, the training was moved to 14 Ryder Street, St James, London. In September 1940 they moved back to Harrow to Fisher Road School, Wealdsden. Incorporated into the syllabus was the Advanced Intelligence Course, designed for Senior RAF Intelligence Officers from operational commands, and certain Naval and 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.