Admiral
From Starbase 900 Wiki
Admiral is a military rank, the equivalent of which is used by the service organizations of many civilizations. As a traditional grade, admiral is the most senior flag officer rank of a naval organization, senior to a captain. Admirals command fleets of ships, as opposed to captains commanding single ships or units. In comparison to other ranking systems, this rank is equivalent to the ground-based rank of general, or the Cardassian Union's quasi-military rank of legate.
Many rank systems, including that used by various incarnations of Starfleet, have been known to use several grades of the admiral rank, which include, in order from most senior: Fleet Admiral, Admiral, Vice Admiral, Rear Admiral and Commodore. All grades of Admiral are generally addressed as "Admiral".