Jonathan_S wrote:It’s not that they’re serving aboard two ships simultaneously - Commodore is (at least is some Earth navies) a courtesy rank given to designate a non-admiral who has been assigned a (usually temporary) multi-ship independent command. That’s usually the senior most captain of the ships, but it doesn’t have to be. Sometimes navies will assign a separate officer as Commodore who all the ship captains report to. (Like they would to an Admiral who commanded a formation)penny wrote:
One distinguishing factor does seem to be that a Commodore has the distinction of having served aboard two ships or roles simultaneously. Which would account for Tremaine's COLAC duties. But I do not want to think that his special assignment actually hampered him in some way. Fueled by (taken from the net) ...
But just like the Admiral isn’t serving on two ships simultaneously just because he’s assigned command of their formation a captain bumped up to Commadore still serves on just their ship; they can merely give orders to the captains of the other ships in their formation.
So say the admiral of a carrier group splits off a tin can and a couple of frigates to go deal with a situation a few days away. The destroyer’s captain is likely going to be put in charge of that 3 ship detachment and would be called Commodore (instead of their permanent rank) to indicate that and so it’s clear when people are speaking of the officer in charge of the formation.
I always thought of it in terms of Job and Rank. Depending on the current rules for a navy, "Commodore" could be either. Currently in the US navy, Commodore is a Job - the leader of a squadron of ships. Or, as stated above, The title can also be temporarily be given to a visiting individual of Captain Rank to avoid confusion (1 Captain per ship). A similiar job is Commandant - The senior commander of an outpost, fort or port. In the Navy, this role could be filled by anything from an Lt-Commander to an Admiral, depending on the size of the post. It's a job, not a rank.
Rank, being more a measure of experience and seniority. In WWII, the Rank was reinstated (As a Theater Rank, not permanent rank) for leaders assigned to lead small multi-ship units. This was done to have parity with European navies and establish clear chains of command where more "front line" leaders were required. Due to the rapid expansion of the armed forces, many officers who had served in peace were given a "theater rank" several slots above their permanent one so the forces could rapidly grow the officer corp. to lead the new forces - those that under-preformed were returned to their old rank when rotated home, and most reverted after the war during the draw down.