This thread was suggested by a mod, so as not to clog the "Controversial Opinions" thread. So, is it?
I say absolutely, and the regulations and ranks and all that are basically irrelevant. As to why? That you can chalk to organizational discipline.
Now, Starfleet certainly does have OTHER functions, and one can argue that those others are its primary functions given that Starfleet doesn't go looking for fights. (Usually) But it's Starfleet ships that are sent out to show the flag to other powers and it's Starfleet that fights the wars that come to the door.
Great! A dedicated thread for this topic.
I'll re-post--
Starfleet vessels are the military (security / defense / offense) branch of the Federation. As established--for a reason--in TOS, Stafleet ships are not research ships that just so happened to have a weapons system. They have patrolled areas, engaged in battles, defended the Federation borders (and those of parties of interest) and as Kirk pointed out in
"By Any Other Name""
"The Federation has handled foreign invasions before."
..and
"Errand of Mercy":
"I'm a soldier, not a diplomat."
Kirk--of all captains--did not misspeak when describing himself in that way. Yes, Starfleet explores, but its under the aegis of a military body--exactly the way it was meant established in TOS. Its not
Bill Nye in Space with Pepper Spray. Handling foreign invasions (think about what that means) is not the job of the kind of mythical Starfleet myth pushed with the development of TNG.
You need crews and technology capable of warfare and
train for it, which we learn in
"The Ultimate Computer" when Commodore Wesley enlists the 1701 into war games (to test the M-5).
No organization would be "created to seve a non-military" mission if one of their functions allows General Order 24, described by Kirk (in
"A Taste of Armageddon") as:
"You heard me give General Order Twenty Four. That means in two hours the Enterprise will destroy Eminiar Seven."
That's not some decision (or the kind of ship designed to execute it) made after months or years of hand-wringing in some U.N. council-like setting. It was a common power consciously granted to Starfleet ships, which is as much a lethal power (obviously implying mass destruction of a civilization) as the Death Star. There's no part of any of the quotes that renders Starfleet into a "non-military" organization.