Royal Air Force Volunteer Reserve (Training) VRT Officer Pin Badge. United Kingdom.

Royal Air Force Volunteer Reserve (Training Branch) officers in the ATC, abbreviated RAFVR(T), were identified by the 'VRT' pin badge, as formerly worn on the lower edge of shoulder rank slides and lapels.
The Royal Air Force Volunteer Reserve (Training Branch), often abbreviated to RAFVR(T), was a Volunteer Reserve element of the Royal Air Force specifically appointed in a cadet training role within the Royal Air Force Volunteer Reserve.
Members of the RAFVR(T) had no call-up liability and often operated part-time with the Air Experience Flights and Volunteer Gliding Squadrons, which provide flight experience for the Royal Air Force Air Cadets.
In December 2017, the Air Force Board determined that RAFVR(T) ranks as part of the Royal Air Force Air Cadets would be removed. This was to make way for the introduction within all MOD-sponsored cadet forces of the Cadet Forces Commission (CFC), which was introduced in 2017 and restated in 2018.
Candidates who passed the Officer and Aircrew Selection Centre (OASC) boarding process were appointed as Officer Cadets in the Air Cadets.
As an Officer Cadet Air Cadets, they wore a completely white rank slide with gilt VRT insignia in the centre. This was accompanied by standard officers' headdress (complete with white band whilst at ATF).
Following completion of their OIC, a newly appointed Pilot Officer Air Cadets would then receive their rank slide.