In the year 2367, just after the Borg attack on Sector 001, the Federation Council and Starfleet Command began to work out ways to prevent another similar attack. At that time, plans were formulated to revamp one of Starfleet's fleets with some of Starfleet's most advanced ships and dispatch them to Sector 349, just past Klingon space. This fleet, the Fourth Fleet, was to defend the Federation and the Klingon Empire from any possible future Borg incursions. While this plan was ambitious and highly supported in the halls of Starfleet Command, the plan was set aside; rebuilding the entirety of Starfleet was priority at the time. Losses at the hands of the Borg along the Romulan Neutral Zone and the path the Borg carved throughout the Federation on its way to Earth were severe, culminating in the Battle of Wolf 359. With the thoughts of the Borg in the back of the mind of all of Starfleet, anti-Borg technologies and tactics were being built up and created in the mean time.
Three years later the Federation had its first contact with a group from the Gamma Quadrant known as the Dominion. In the ensuing events, Starfleet's interests were shifted from the Borg to the Dominion given that very little was being heard from the Borg at the time, and the threat the Dominion was posing was imminent. Starfleet stepped up its ship building efforts to increase the fleet size by at least thirty percent with newer, better equipped starships.
In 2373, the Federation got its wake up call; on stardate 50893.5 the sight of Starfleet was shifted away from the Dominion temporarily as a Borg cube entered Federation space. Destroying a Federation colony on Ivor Prime, the course of the Borg cube was certainly projected as Earth. A quickly assembled Federation fleet met the cube in the Typhon Sector in an attempt to stop it from reaching Earth. Failing in the attempt, but gaining more time to gather more starships with the fleet, the fleet regrouped and made a last ditch stand at Earth itself. The arrival of the USS Enterprise proved the decisive edge with the advanced technologies of the newly created Sovereign-class.
After the successful conclusion of the battle Starfleet again brought up the Fourth Fleet. Captain Mike Bremer was key in pushing for the reformation of the Fourth Fleet. Successfully pushing it and convincing the right admirals the plans were put in place to reorganize Starfleet to allow the opening of the new Fourth Fleet, which was to be given the codename of 'Bravo Fleet'. A high ranking admiral in Starfleet, Victor Murdock was promoted to fleet admiral and given command in order to help better facilitate the formation, structuralization and command of the fleet. He also helped design a new class of Federation starship to fight the Borg: the Kelvin-class. It incorporated the most advanced technologies the Federation had to offer at the time, and was considered a sister class to the Sovereign in the same way that the Nebula-class complemented the Galaxy-class. The leadership of the Fourth Fleet decided to move the fleet headquarters to the newly built Avalon Fleet Yards. At the same time Captain Bremer contacted Commander Micheal Jarovik, the commander of a small, secret, anti-Dominion team called S.T.O.A.T. to assist in the deployment of the Kelvin-class across the fleet.
During that time, Fleet Admiral Murdock began to recruit staff all throughout the different levels of the fleet; coordination of formation of the fleet, it's staff, and everything else involved was coordinated from the fleet's flagship: the USS Miranda. A fleet executive officer and chief of staff were chosen, and the groundwork was set to fill in the various task forces.
It was also during this time that the Fourth Marine Division was reactivated by the Starfleet Marine Corps to be assigned to the Fourth Fleet. The Marine Division was to be assigned to several starships as well as operating its own vessels dedicated more closely to combat. Weeks later the starship Pegasus was destroyed; most of her crew, including her captain, Captain Mike Bremer, were picked up by the USS Enterprise and taken to Earth. Fleet Admiral Murdock was there to greet the Pegasus survivors. In a meeting with Captain Bremer, command of a new ship was given to him and his crew awaiting them at Utopia Planitia. Upon arrival, the second in a line of one of the most highly classified starships in Starfleet history was nearing completition: the Galaxy-class Refit. Painting on the hull was applied and the newest USS Pegasus was born to join the ranks of the Fourth Fleet.
During the next few months, the starships of the Fourth Fleet operated in Sector 349 of the Beta Quadrant. They made first contact with a new race known as the Raeyans, whom soon after became a Federation protectorate. To keep a constant Federation presence in the reign, Starbase 349, codenamed "Starbase Bravo" was constructed. For added defense, the starships Lexington and Hornet were assigned there. A full detachment of Klingon warships, in a joint effort with Starfleet, was assigned to operate out of the base as well. Led by a Klingon general, the IKS Amar was assigned as the flagship of the Klingon unit.
Shortly thereafter full open war was declared with the Dominion. Fourth Fleet starships Miranda, Pegasus, Nautilus, and Yorktown were ordered from Sector 349 to the Alpha Quadrant. The Yorktown was assigned to lead a small Federation/Klingon task group and protect space station Deep Space 9's flank. Instead, Admiral Martok, executive officer of the Fourth Fleet, took it upon himself and ordered his own task force to intercept a Dominion convoy which was quickly heading into the Bajoran sector. Even though this was deemed the correct course of action by the Starfleet Judge Advocate General, Admiral Martok was demoted to captain for disobeying orders, and was also allowed to keep his starship command. Two days later, Captain Bremer was promoted to Admiral and Fourth Fleet Executive Officer. In the next three months, as the Federation and Klingons played cat and mouse, the Fourth Fleet was assigned many new starships to be dispatched between her task forces. The fleet grew from 57 ships and one starbase to 125 ships and 6 starbases. At this time, Admiral Jarovik and his S.T.O.A.T. team joined the starships of the Fourth Fleet.
The Fourth Fleet went on an offensive and attacked a Dominion shipyard, several convoys, and other targets with relative success. These attacks helped Captain Sisko make his decision to retake Deep Space 9. Several Fourth Fleet ships were assigned to Sisko's force, including the Miranda, Pegasus, Lexington, Thunderchild, Yorktown, Hornet, Calidorn, Challenger, and Monitor. As the battle progressed, the Klingons arrived and caught the Dominion fleet off guard. The Defiant made it through and warped off towards Deep Space 9. Admiral Bremer and the Pegasus took command of the fleet. Eventually the remaining forces were able to punch larger holes through the Dominion fleet and follow the Defiant back to Deep Space 9, where the station was reclaimed by the Federation forces. On Stardate 51721.3, as the Romulans were entering the, war, the Fourth Fleet was making contact with a new Beta Quadrant race known as the Krazzle when a Krazzle warship attacked a Raeyan freighter. The starships Pegasus and Bonaventure were sent in. After a few days, three Krazzle warships attacked the two Starfleet vessels. The three Krazzle ships were destroyed, but at a heavy loss; the Pegasus stardrive section was destroyed in the fight. After the attack, the Pegasus saucer section limped back to Starbase Bravo for repairs. The ship later received a new stardrive section from Avalon Fleet Yards. The impact that the Krazzle made on the Federation was instant, large and very clear.
On Stardate 52576.0 the Fourth Fleet gathered near the Badlands for an assigned fleet mission targeted against the Dominion. At great loss, the Fourth Fleet regained the planet Draconia, well over two thousand prisoners of war, and destroyed more than 85 Dominion warships and a major ship producing shipyard. A few days later, the war ended with the final assault on Cardassia Prime. With the conclusion of the war, the man who was largely responsible for the initial success of the Fourth Fleet and its beginning years, Fleet Admiral Victor Murdok, retired.
The Fourth Fleet, originally developed to combat the Borg, Dominion and other large threats, now needed a new direction with the peace time that followed the war with the Dominion. Admiral Bremer was promoted to Fourth Fleet Commanding Officer and was assigned the task of reforming the Fourth Fleet in the peace time role. Reforming into ten task forces the Fourth Fleet was spread out across not only the Alpha Quadrant but the entire galaxy. Starfleet decided to make its way back into the Gamma Quadrant, careful to not intrude on Dominion space in order to avoid another war, expanded its efforts and forces near Starbase Bravo on the far side of the Klingon and Romulan Empires, and tasked the Fourth Fleet with improving relations with all the major galactic empires. With the return of the USS Voyager to the Alpha Quadrant and the discovery of an ancient Iconian gateway, the Federation established a presence in the Delta Quadrant.
In 2379 an internal political shakeup in the Romulan Empire and the ensuing incident allowed for better relations between the Federation and Romulan Empire. The Fourth Fleet was instrumental in forging a better alliance between the two powers. Helping the interim Romulan government form and the new, permanent Romulan government be put in place, the Fourth Fleet was making notoriety all over the Federation. It was also shortly after this time that the Klingon Empire began more in-depth exchange programs with Starfleet through the Fourth Fleet.
Shortly after this great achievement, Admiral Bremer made a tough decision and resigned as Fourth Fleet Commanding Officer; believing that the betterment of relations between the Federation and Romulans, and the integration of Klingon vessels into the Fourth Fleet to be a crowning achievement on such a storied, eventful and highly decorated career. The man who originally pushed for the reformation of the Fourth Fleet, was there since its inception, and largely guided it to career success was to returned to the rank of Captain and took up a position commanding a largely important outpost on the fringes of Federation space.
Admiral Sorac Dunar took command of the Fourth Fleet, with Admiral Wolfe taking over as his executive officer. It was during this tenure, with the release of information from Starfleet Command, that the Fourth Fleet was given another assignment: further exploration of the Delta Quadrant. Resources for the Delta Quadrant initiatives were increased by nearly fifty percent.
By mid 2381, Admiral Sorac took a demotion to captain to lead an expedition beyond Federation space. This allowed Admiral Thomas Wolfe to advance to Fourth Fleet Commander. With a rather peaceful tenure as fleet commander, Admiral Wolfe retired after a little over a year of service. Admiral Robert Chadwick was given the position of Fourth Fleet Commander and began to usher in an era of reform. Many things including policies, starship deployments, and intergalactic relations were targeted as needed reforms within the Fourth Fleet. After serving two years as fleet commander, Admiral Chadwick was reassigned to Starfleet Command and Admiral Valren Arelwynn was reassigned from Starfleet Intelligence to finish the reforms that Admiral Chadwick had started.
Not able to complete the task before being reassigned to Starfleet Command himself, Admiral Arelwynn returned to Earth. Admiral Adrian Mormar was brought in as an interim commanding officer for the Fourth Fleet until someone more aptly suited for the role could be found. After serving a short one month term he was replaced by Admiral Luke Duncan who was an admiral on the frontier of operations near Starbase Bravo. Admiral Duncan proved to be an excellent frontier commander. He was not, however, interested in the politics of the main fleet back in the Alpha Quadrant, or the politics that plagued Starfleet Command. As a result after less than half a year he resigned as Fourth Fleet Commanding Officer to better focus on his operations and command in the Raeyan Sector area.
Finally in mid-2384 Admiral Dan Taylor took command of the Fourth Fleet. Proving to be much like his predecessor, Admiral Taylor wasn't a very apt politician when it came to the upper admiralty. Taylor did, however, try and push through the political smoke screen that many admirals at Starfleet Command attempted to put in front of him. Aided by his fleet executive officer, Admiral Bob Martens, Admiral Taylor helped improve things in the Fourth Fleet as much as he could. Unfortunately after a short period serving as Fourth Fleet Commander he retired citing disgust in the face of the politics; Admiral Martens followed him into retirement in less than a week.
For the first time in history the Fourth Fleet was left without a commanding officer or first officer. This left Admiral Christopher Pike to act as commanding officer of the Fourth Fleet while the Starfleet Commander in Chief, Chief of Starfleet Operations and Chief of Staff of Starfleet discussed a possible replacement. For well over a month they finally decided to promote Admiral Pike into the position officially allowing him to firmly place a hold on the Fourth Fleet. It was shortly into his tenure as Fourth Fleet Commander that Admiral Pike was met with some animosity by some of the fleet staff. Unwilling to bend or falter to the minority of staff members who were unhappy, Admiral Pike requested that they all be separated and transferred into the other fleets; the Chief of Starfleet Operations was happy to oblige. After only a year into his position as Fourth Fleet Commander Admiral Pike retired from active duty and took up a staffing position at Starfleet Academy training new cadets.
His fleet executive officer, Admiral Teylas Ramar was chosen as a worthy successor. Feeling that much reform was needed throughout the entire Fourth Fleet, as well as some political errors that had been made over the past years, he set forth to change the face of the fleet. Aiming to use the Fourth Fleet to improve relationships between the Federation and all the other galactic empires, reduce the politicizing within the Fourth Fleet, and improve the communications on all levels of the fleet staff, Admiral Ramar was able to successfully complete all of his reforms within a year. At the end of his first year of service as Fourth Fleet Commanding Officer, Admiral Ramar retired from active duty to take up a position in the Federation President's administration.
Admiral Barak Aubrey, until that point the Fourth Fleet Executive Officer during Admiral Ramar's entire tenure, was asked to assume command.