Oh, I think that any such branch of service will quickly act to justify a manned presence in space and that their astronauts will be just as proud and manly as any fighter pilot.
Especially the lesbians.
Your sarcasm observed. Seriously, as a DoD ‘branch’ a space force would get their requirements from the CoCom’s, as is the case for all the services. I don’t see any of the combatant commanders calling for billions to support men in space any time soon.