He was promoted to major on 16 December 1930, and from 31 December 1930 to 18 February 1932 he was Deputy Assistant Adjutant &amp; Quarter-Master General (DAA&amp;QMG), Lowland Area, Scottish Command. From 1 May 1932 to 30 April 1935 he was Officer Commanding (OC) the Cameronians regimental depot at Hamilton, South Lanarkshire. In June 1937 he had been promoted lieutenant colonel, and, shortly after the birth of his second son, John Murray Graham, on 7 June, was given command of the 2nd Battalion, Cameronians (Scottish Rifles). The battalion was then stationed in Palestine on internal security duties during the Arab Revolt and returned to England in 1938, where it became part of Brigadier Henry Willcox's 13th Infantry Brigade, part of Major General Harold Franklyn's 5th Infantry Division at Catterick, Yorkshire.