Side note, I always found it funny that one of the symbols for the Royal New Zealand Air Force is the British symbol (composed of concentric circles) with a Kiwi in the middle. The symbol for their air force literally has a flightless bird on it!
> The symbol ... is directly descended from the RAF
Aircraft roundels originated with the French Tricolore cockade. Concentric circles are used in many many country's roundels, and are far from anything particularly British.