Fleet Command happened in 1999.
U.S. Pacific Fleet
John Fremont
Admiral Nimitz was in overall command of the American Fleet, with Admirals Spruance and Fletcher in operational command. Yamamoto planned the attack, but it was carried out by Kondo and Nagumo.
In 1915, the position of fleet admiral was created to provide a senior officer with overarching authority and responsibility for the strategic deployment and management of naval forces. This role was designed to enhance coordination and efficiency within the fleet, particularly during times of war. The rank, which is rarely awarded, allows for a unified command structure, ensuring that naval operations are conducted effectively under a single leader. The establishment of this position marked a significant evolution in naval command during a period of growing complexity in maritime warfare.
(As this question is in the WW2 category, this answer is specific to WW2 combatants) "fleet admiral" can refer either to a role, or a rank. As a rank, "fleet admiral" was formally known as "Admiral of the Fleet" in the Royal Navy, Soviet Navy, "Großadmiral" in the Nazi Kreigsmarine, "Fleet Admiral" in the US Navy, and Marshal-Admiral (Gensui) in the Imperial Japanese Navy. In all cases, it was the highest naval rank in each country. Most countries seldom had more than one or two persons serving at that rank at one time. The exception was the US Navy, which had 4 serving Fleet Admirals by the end of WW2. The duties of someone filling the rank of Fleet Admiral generally would be considered Logistical and Grand Strategy - that is, they were almost exclusively shore-bound commanding vast collections of fleets of ships in far-flung campaigns, or heavily involved in naval production and procurement. As a functional role, "fleet admiral" generally refers to the commanding admiral of a specific fleet. It can refer to a variety of ranks of admiral, but, was generally not applied to anyone not at least of admiral rank; those of less than admiral rank who commanded collections of ships were usually afforded the title "commodore". If there were several admiral-ranked personnel in a fleet, "fleet admiral" would be the moniker applied to the one in command (usually the most senior, but not necessarily, depending on circumstances). The role of fleet admiral is a tactical command - it involves directing the operations of the fleet, according to the grand strategy directed by the naval command authority. A fleet admiral would have wide latitude of both action and authority to accomplish their assigned mission(s). Their command usually included not just naval vessels, but transport vessels, naval bases, marines, and sometime even non-Navy assets in the area of operation.
Fleet Command was created in 1999.
United States Fleet Forces Command was created in 2006.
There was no Captain of the Second Fleet of convicts to Australia, just skippers for each of the individual ships. This was because the Second Fleet was not placed under government command, but was contracted out to private shipowners and businesses.
Captain Arthur Phillip was in charge of the First Fleet of convicts to Australia.
A Greek fleet defeated a Persian fleet.
Strike Fleet happened in 1987.
Fleet Defender happened in 1994.
The Grandest Fleet happened in 1993.
Space Fleet happened in 000.
a fleet
USPACOM
The Franco-Spanish fleet was under the command of Pierre de Villeneuve.