Originally Posted by
Lima Juliet
Sadly, the only half-wits are the ones that insist on keeping calling a badge a brevet, when a brevet is a certificate!
Look up “un brevet de scouts” (a scout’s certificate), “
un brevet de secouriste” (a first aid certificate), “un brevet de base” (a pilot’s licence), “un brevet en anglais” (an English certificate) or “un brevet d'invention” (an invention certificate (more commonly known as a patent)). Nowhere, apart from in some half-wit’s brain, does it mention badge - never has and never should do! 
Would you care to expand on brevet rank, widely used in the British army for many years. "Certificate rank"?
It doesn't work, because the usage is English.
That said, yes, the flying badges are flying badges are flying badges.