He continued his service in the RAF, serving throughout the Second World War before retiring in 1946 to devote himself to writing, including several volumes of autobiography.
He later transferred to the Royal Flying Corps; he wrote in his book No Parachute on 19 May 1917, six pilots, newly arrived in France and still to be allocated to a squadron, were each given a new B.E.2e to ferry between RFC depots at St Omer and Candas.
46 Squadron RFC to fly the Sopwith Pup, Lee gained his first aerial victory on 4 September 1917 by driving down out of control an Albatros D.V north-east of Polygon Wood.
A week later, on 11 September 1917 he shared in the driving down of a Type C reconnaissance aircraft with Captain Maurice Scott and Lieutenants Eric Yorath Hughes and E. Armitage, south of the Scarpe River.
[7]Lee remained in the Royal Air Force (RAF) post-war, being granted a short service commission as a flight lieutenant on 24 October 1919,[8] which was made permanent on 19 March 1924.
5 Armoured Car Company from 18 November,[13] then as a staff officer at the Headquarters of RAF Iraq Command from 16 February 1926.
[14] On 1 July 1927 Lee was promoted to squadron leader,[15] returning to the United Kingdom to attend a course at the RAF Staff College, Andover from 16 August.
Despite early successes the intervention of the Germans soon put the Allied forces on the defensive, and the British were eventually driven out, first to Crete, then to Egypt.
[37] Following his retirement Lee pursued a career as a writer, something that had begun as early as 1917 when he wrote detailed daily letters to his wife, which later became the basis for his book No Parachute: A Fighter Pilot in World War I, published in 1968.