factions and bands of nomadic bandits who attacked government or military personnel. Grigson was awarded a Second Bar to his Distinguished Flying Cross on 28 October 1921. The citation in the London Gazette read: "For gallant conduct and devotion to duty. This officer has always set a fine example to his flight by his courage and devotion to duty and by constant keenness and hard work. Between the wars Returning home he served as a flight commander with No. 205 Squadron RAF at RAF Leuchars he was posted to Seaplane Training School on 15 August 1922 and returned briefly to No. 205 Squadron RAF on 15 February 1923 before being appointed to command No. 420 (Fleet Spotter) Flight, Fleet Air Arm on 16 April 1923. Twelve months later he attended RAF Staff College, Andover, graduating in April 1925 to attend the School of Oriental Studies. Unsurprisingly, his next posting was to the Middle East as a staff officer with Intelligence at HQ Iraq Command from 28 October 1925. Still in Iraq, Grigson was promoted squadron leader on 7 November 1928, and posted as the commanding officer of No. 55 Squadron RAF on 21 March 1929, overseeing its ageing DH.9As being replaced by Westland Wapitis in February 1930. From January 1930 Grigson attended the Imperial Defence College which prepared senior officers for high command and following his twelve-month course joined the Air Staff. He served with RAF Air Defence Great Britain until appointed to command No. 2 (Indian Wing) Station, Risalpur on 29 August 1935 having been promoted wing commander on 1 July 1935, Grigson returned to England in March 1937 for a period of leave and from 5 August 1937 briefly became staff officer at the RAF Directorate of Organisation before being appointed Maintenance Staff Officer at HQ Maintenance Command on 2 January 1938. He was appointed Senior Air Staff Officer at HQ No. 202 Group RAF Egypt and promoted group captain on 1 January 1939, World War II Grigson was promoted temporary air commodore on 1 December 1940, and appointed Air Officer Commanding, Royal Air Force units in Palestine, and Trans-Jordan and then to Air Staff, British Air Forces in Greece to carry out an aerial survey of the country and identify suitable airfield sites, he later took over as Air Officer Commanding, HQ Eastern Wing. During the German invasion and the Battle of Greece he was appointed acting