Remaining in the army during the interwar period, he received a promotion to captain in 1923 and went to India where he attended the Staff College, Quetta from 1926 to 1927.[1] After this, he went to England to serve as an instructor at the Staff College, Camberley for the next four years. In 1937 he transferred to the Royal Irish Fusiliers and, two years later, received a promotion to colonel and experienced the death of his wife.[1]
Lee served during World War II, initially as a staff officer with General Headquarters (GHQ) of the British Expeditionary Force (BEF) in France, for which he was mentioned in dispatches another time.[1] After serving from late to 1940 until 1942 in the War Office in London as deputy director of Staff Duties,[2] Lee, by now a brigadier, took command of the 44th (Home Counties) Division's 133rd Infantry Brigade until it was disbanded in 1943. In 1944 he was sent to India where he was Major-General in Command of Formation Training until later that year when he was sent to the United States to be Deputy Head of the British Army Staff in Washington, D.C.[2]
He remained in this post until 1947, during which time he also served as aide-de-camp to the King, until he retired from the army, and was remarried, that same year, after well over thirty years of service.[2][1] From 1954 to 1959 he was Colonel Commandant of his old regiment, the South Staffords, as well as Colonel of the Staffordshire Regiment, formed by the merger of the South Staffords with the North Staffordshire Regiment, from 1959 to 1961. In addition to being a keen sportsman, he also wrote pieces for the Encyclopædia Britannica and married again, for the third time, in 1970.[1]
