Slessor commanded No. 4 (Army Cooperation) Squadron, which flew Bristol Fighters out of RAF Farnborough, from April 1925 to October 1928, when he joined the air planning staff at the Directorate of Operations and Intelligence at the Air Ministry [REF].
In 1936, Slessor published Air Power and Armies, an examination of the use of air power against targets on and behind the battlefield.