 Starfleet Fleet Admiral (Movie Era) Star Trek
In the fictional universe of Star Trek, Fleet Admiral is the highest commissioned rank of the Starfleet. As early as Star Trek: The Original Series, "Fleet Admiral" was used as a generic title to describe any Admiral of Starfleet. However, it was not until Star Trek III: The Search for Spock that an actual Fleet Admiral was seen on camera. Fleet Admiral Morrow, played by actor Robert Hooks, was the first Fleet Admiral of Star Trek to actually be seen by the viewing audience.
In Star Trek: The Next Generation, the rank of Fleet Admiral again became generic, often used to describe any Admiral appearing on the show. However, in Star Trek fanon, the rank of Fleet Admiral was established in the follow-on Star Trek series, with the new insignia conjectured to be five gold pips within a gold collar rectangle.
Star Wars
In the Imperial Navy of Star Wars, Fleet Admiral is considered a senior military rank for those who command sector fleets or task forces. Due to the size of the Imperial Navy, however, the neccesity exists for even higher ranks. As such, most Fleet Admirals answer to a High Admiral who in turn answers to a Moff, Grand Moff, or Supreme Moff.
Imperial Grand Admirals and Grand Generals are specially appointed and outrank all personnel, military and civil, save Emperor Palpatine and his appointed executors.
The insignia for an Imperial Fleet Admiral is six blue and red squares in a rectangle design. High Admirals use the same rank badge, but only wear one code cylinder while Fleet Admirals wear two.
 Old Style Fleet Admiral Insignia An old style insignia for Fleet Admiral, used during the time of the first Death Star, comprised a single line of six red squares with three code cylinders. This was also the insignia for High General, the Imperial Army equivalent of Fleet Admiral. High General Tagge, of the first Death Star, wore the old style Fleet Admiral/High General insignia, while Fleet Admirals Piett and Ozzel, of Darth Vader's Task Force wore the later insignia version.
See also: Rank Insignia of the Galactic Empire
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