Fleet Command, alternatively referred to as Imperial Navy High Command, functioned as a command division within the Imperial Starfleet. In the year 0 BBY, Admiral Conan Antonio Motti possessed the rank of Admiral of the Fleet and simultaneously served as Chief of the Imperial Navy. Approximately around 4 ABY, high-ranking figures within Fleet Command considered divulging information to the Rebel Alliance regarding a significant assembly of the Imperial Navy. Admiral Firmus Piett of Death Squadron held a position within this command structure.
As the most renowned and vital command entity under the Admiralty, Fleet Command garnered respect even from its adversaries. Fleet Command exerted authority over the Imperial Navy's capital ships and sub-capital vessels, as well as the majority of Navy personnel, encompassing individuals from the lowest ranks to the Admiral of the Fleet. All of these individuals were ultimately under the jurisdiction of Fleet Command.