Is it against the rules?

[Grog]

(k I'm pretty new too, but) seems to me the problem isn't Civilian ID: could be some desk-jockey somehow lucked into an old fighter on Corsair e-Bay or something;),

but *Guard* IFF ? That's out of whack: Guards *are* Military thus the name "Guard".

And if you're a Guard Admiral and this is your little perk you fly around when you're not running your Battleship then you should have Corsair Mil ID unless you're on some sort of diplomatic or private mission in which case use another IFF since you aren't flying as a "Guard".