patrols and escort flights in all weathers, by day and night, during the performance of which duties they have brought down hostile aircraft on several occasions. No task is too difficult for these officers." Post-war operations Grigson was confirmed in his rank as captain (seaplane pilot) in December 1918. and went with No. 221 Squadron RAF to Russia in December 1918 to support White forces against the Bolsheviks. The unit was based at Petrovsk from January to 1 September 1919 when it was disbanded. On 1 August 1919 he was granted a permanent commission with the Royal Air Force with the rank of captain, and taken on strength of No. 47 Squadron RAF in South Russia on 21 August 1919. The squadron had been sent to Southern Russia to help General Denikin's White Russian forces in their fight against the Bolsheviks in the Russian Civil War. While the RAF's ostensible mission was purely to provide training to Denikin's forces, No. 47 Squadron was included in the mission to carry out operational sorties. It was equipped with a mixture of aircraft, with flights equipped with Airco DH.9 and DH.9A bombers and Sopwith Camel fighters. The squadron's flights operated independently, carrying out bombing and strafing missions against Bolshevik forces. He was awarded a Bar to his Distinguished Flying Cross on 22 December 1919, "in recognition of distinguished services rendered during the war and since the close of hostilities in South Russia" On 18 February 1920 he and Captain C. F. Gordon shot down an enemy operated Sopwith 1½ Strutter Grigson was Mentioned in Despatches on 31 March 1920. From February 1920 he commanded a flight of Airco DH.9s belonging to No. 55 Squadron RAF in Egypt. The Squadron reformed on 1 February 1920, when No. 142 Squadron, based at Suez was re-numbered. It started to receive Airco DH.9A aircraft in June 1920, and was equipped with a mixture of DH.9s and DH.9As when it transferred to Turkey in July to support British forces occupying Constantinople and the Dardanelles.Halley 1980, pp. 91–92. Grigson had seen action in the Eastern Mediterranean, the Caspian, Egypt and Iraq. He was awarded the Distinguished Service Order on 12 July 1920, 'for gallant and distinguished service' in Southern Russia. No. 55 Squadron RAF moved to Bagdhad in Iraq in September 1920 discarding its remaining DH.9s to standardise on the DH.9A, and was involved in missions against rebellious tribal