Of course, it is not just Flying Badges on the wooly-pully these days. There are also badges worn on sleeves of woolly pullies for Bomb Disposal, Parachute Wings, Parachute ‘light bulb’ (rarely seen as many incorrectly wear the wings instead - including some very senior officers), Commando Dagger, Mountain Rescue, Aero Medics/Nurses, Air Stewards/Cabin Crew Voluntary Bandsman and Marksman.
