That, I admit, is indeed how I find it as I have just googled it.

But that was not, as I recall it, how it was when I passed 'signalling 2nd class badge' in Boy Scouts in 1944: when, to my recollection, A was down left, B horizontal left, C vertical left, D vertical right &c. Perhaps it has been modified. Certainly that must still have been how it was, when ex-Major George Parker suggested the design of the badge based on it to his colleague Peter Cadogan, one of original CND founders, in the staffroom at Chesterton School Cambridge in 1957 when CND was founded; when I was Head of English in that school, 1966-68, George Parker himself told me the tale [though Peter C had left by then & was fully employed by CND & Committee of 100, though his wife Joyce still taught Music]. The upstroke on that old system therefore did for the C & the D, while the N was the two down-at-acute-angle arms as still the case.