Each RAAF Squadron is given a two letter code. To the untrained eye there seems to be no rhyme nor reason to the coding, but I doubt that that is true. Some examples are below Sqn No Code 1 NA 2 KO 3 LT, CV 4 QE 5 BF I have asked RAAF Museum but they must be busy. Can any lister help, please? Cheers, Ted Harris