The guy in Star Trek III referred to himself as "the Commander of Starfleet" iirc. Then in ST6 we had the "C in C."
In DS9, Weyoun said something about the "Starfleet Commander"... but then Jaresh implied he was the Commader in Cheif...
In DS9, Weyoun said something about the "Starfleet Commander"... but then Jaresh implied he was the Commader in Cheif...