I don't feel any obligation to "demonstrate" my patriotism, to you or anyone else.
Oh, all right then. The militant patriots win this round, is all.
Science fiction writers have used "Stellar Navy" which I rather like and have used for my own short fiction. It works, without such prefixes as Intra- or Inter-.
...Although the secondary meaning of "stellar" as "splendid, great, dippidy-do, good show lads" gives it a bit of a comical touch.
And semantically taken, "stellar navy" or "starfleet" would seem to suggest that stars are being arranged into a naval force. Which is of course true of TV shows and movies such as Star Trek or Star Wars, but not literally true of the universes depicted therein.