These were worn by Men and Women Other Ranks and NCO's on the upper Shoulders of their Service Dress Tunics , Issued to RAF Auxiliary Personnel who had enlisted before the war and it was a mark honour, Latter Auxiliary were transferred to VR

The Royal Auxiliary Air Force owes its origin to Lord Trenchard's vision of an elite corps of civilians who would serve their country in flying squadrons in their spare time. Instituted by Order in Council on 9 October 1924, the first Auxiliary Air Force squadrons were formed the following year. The pilots of AAF squadrons were generally formed from the wealthier classes, as applicants were expected to already have, or be prepared to obtain, their pilot's licence at their own expense. Other ranks and junior NCO's formed Ground crews to these Volunteer Sqaudrons and Sergeants could become pilots during WW2.

All serving members were required to wear the letter A on their uniform