The post of Air Officer Personnel was created in 1981 to oversee numerous Directorates dealing with matters pertaining to Personnel. Dte of Personnel Officers (DPO), Personnel Airmen (DPA) and Personnel Services (DPS) were transferred to AOP from AOM on the creation of the post. In 1984, DPS was transferred back to AOM, though some elements of it were retained by AOP in the formation of a new Dte of Personnel Planning (DPP) in 1985. In 1987 and 1989 respectivey, Dte of Trg and Dte of Edn were transferred to AOP. Prior to being formed as AOP, a post directly responsible to the Chief of Air Staff, AOP function was performed by ACAS (Personnel), an AVM rank officer reporting to the AOA. This post was created in July 1970. Much earlier in the 1930s the role was managed by an officer designated as "Senior Personnel Staff Officer (SPSO)". Somewhere in the 1940s this was converted into a Directorate called the Dte of Personnel Services. It was again renamed as Dte of Personnel in 1949 and remained so till 1958 when it was broken up into DPO and DPA. It was not until 1970 that all the functions related to Personnel were consolidated again under ACAS (Personnel).