The Royal Air Force (RAF) was formed on 1st April 1918 following the amalgamation of the Army's Royal Flying Corps (RFC) and the Navy's Royal Naval Air Service (RNAS).

RAF officers records can be found in alphabetical order in series AIR 76

Royal Air Force (RAF), RFC & RNAS: First World War, 1914-1918: Service Records

British Armed Services: Campaign Medals, and other Service Medals

First World War: Disability and Dependants' Pensions

Royal Air Force: Operational Records

William Spencer, Air Force Records for Family Historians, (PRO, 2000)

The Air Force List can be helpful in tracing the career of individual officers.

It may be worthwhile to check whether the officer was awarded any gallantry medals.

There are no campaign medal rolls in The National Archives for men who joined after the formation of the RAF in April 1918, although they did receive the relevant medals. See Chapter 10 of William Spencer's Air Force Records for Family Historians.