Newall was granted a permanent commission in the Royal Air Force as a lieutenant colonel on 1 August 1919[REF] and promoted to group captain on 8 August 1919 [REF].
Philosophically, Newall remained a close follower of Trenchard during the interwar period; his time in the Independent Bombing Force had left him convinced that strategic bombing was an exceptionally powerful weapon, and one that could not effectively be defended against.