Chief of the Air Staff (United Kingdom)

The Chief of the Air Staff (CAS) is the professional head of the Royal Air Force and a member of both the Chiefs of Staff Committee and the Air Force Board. The current Chief of the Air Staff is Air Chief Marshal Sir Andrew Pulford. He succeeded Air Chief Marshal Stephen Dalton as Chief of the Air Staff on 24 July 2013.

History
The post was established in January 1918, just prior to the official formation of the RAF, and its first occupant was Major-General Sir Hugh Trenchard. Following Trenchard's resignation in March 1918 after disagreements with the first air minister, his rival Major-General Sir Frederick Sykes was appointed. With Churchill's post-War appointment as Secretary of State for War and Air, Sykes was moved sideways to head up the nascent Civil Aviation ministry and Trenchard returned as Chief of the Air Staff. In the early 1920s Trenchard had to fight to keep the RAF from being divided and being absorbed back into the Royal Navy and the British Army. After Lord Trenchard retired in 1930 there were still suggestions that the RAF should be broken up, but Trenchard's foundations proved solid.

By the time World War II broke out in 1939, the then occupant of the post, Air Chief Marshal Sir Cyril Newall, had a service that had been undergoing the most rapid of expansions during the British rearmament programs of the late 1930s. Newall gave way in 1940 to Air Chief Marshal Sir Charles Portal, who led the service for the rest of the war. Portal was a tireless defender of the RAF and extremely able in administration and strategy. Postwar the RAF was reoriented to perform the dual roles of defending the shrinking British Empire and possibly fighting against the Soviet Union in a Warsaw Pact verses NATO war over Germany and the United Kingdom. The Chiefs of the Air Staff of the day had to fight a constant battle to keep the British aircraft industry alive. In the end only minimal success was achieved, with only a rump aviation industrial base left by the 1970s.

The first eight chiefs of the air staff were originally commissioned in the Army, with four coming from the infantry, two from the artillery and one each from the cavalry and the engineers. Of these both Lord Trenchard and Sir John Salmond each held the post over two separate periods. By the early mid-1950s sufficient time had elapsed for officers originally commissioned in the British air services of World War I to have risen through the ranks to RAF's senior post; Sir John Slessor had originally served in the Royal Flying Corps while Sir William Dickson was commissioned into the Royal Naval Air Service. In 1956 Sir Dermot Boyle became the first chief to have originally been commissioned in the RAF.

Supporting staff and honours
The Chief of the Air Staff's deputy is the Assistant Chief of the Air Staff. From 1918 to around 1968, the Chief of the Air Staff's deputy was the Deputy Chief of the Air Staff. They also appoint the Chief of the Air Staff's Warrant Officer who is the most senior Other Ranks member of the RAF.

The Chief of the Air Staff is normally appointed an Air Aide-de-Camp to the British sovereign.

Chiefs of the Air Staff
The following list gives details of the chiefs of the air staff from 1918 to the present:


 * 1)  The ranks shown are the highest rank that the officer in question attained during his tour as Chief of the Air Staff. However, in the case where the officer was promoted on the day before he was posted or retired, then the lower rank is shown.

Other service chiefs

 * Chief of the Defence Staff (United Kingdom)
 * First Sea Lord / Chief of the Naval Staff
 * Chief of the General Staff (United Kingdom)
 * Chief of Air Force (Australia) (Between 1922 and 1997, the RAAF's senior officer was known as "Chief of the Air Staff".)
 * Chief of the Air Staff (disambiguation)

Generally relevant

 * CAS Air Power Workshop