 40 Squadron RAF.Chidlaw-Roberts was one of the RAF pilots who served in Russia in 1919.In January 1920 Flight Lieutenant Chidlaw-Roberts relinquished his temporary RAF commission and was restored to the establishment of the Hampshire Regiment with the rank of lieutenant, but on 23 March 1920 Chidlaw-Roberts left the Hampshire Regiment, and was assigned to the General Reserve of Officers as a lieutenant with seniority from 3 July 1916.