 Looking for a more secure future, he joined the newly established Royal Australian Air Force (RAAF) in August 1921, following an interview with Wing Commander Stanley Goble, a wartime acquaintance through the RAF.Ranked flight lieutenant, Pentland was put in charge of the RAAF's complement of S.E.5 fighters at Point Cook, Victoria, part of the Imperial Gift recently donated by Great Britain.The young Air Force had the atmosphere of a flying club, where everyone knew everyone else.