Dominion (Star Trek)
||This Star Trek-related article describes a work or element of fiction in a primarily in-universe style. (January 2011)|
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|Founded||circa 7600 B.C.|
|Home world||Founder's home planet, Gamma Quadrant|
|Official language(s)||Dominionese, (see Universal translator)|
In the Star Trek universe, the Dominion is a militaristic empire composed of many different alien races, based in the Gamma Quadrant. It first appeared, and acted as one of the primary antagonists in the television series Star Trek: Deep Space Nine.
Member races 
The Dominion incorporated a vast number of planets, and their resident species, into its military and civilian ranks, including:
Little is revealed regarding the Dominion's inner workings, other than the fact that the Jem'Hadar and Vorta fulfil the main military and administrative roles respectively.
Early history 
The Dominion was established over two-thousand years prior to the events of Star Trek: Deep Space Nine, by the Changelings, a race of liquid life forms capable of shapeshifting, as a means of defending themselves against the widespread persecution they faced from humanoid races (whom they called "solids"). These Changelings genetically engineered a series of 'slave races' to act as the footsoldiers of their new empire, and were dubbed the Founders by their new creations.
First contact and escalation 
The first mention of the Dominion is in "Rules of Acquisition" when Quark was seeking 100,000 vats of tulaberry wine. There were various vague references to them as a major Gamma Quadrant power throughout Deep Space Nine's second season.
The Dominion were unknown to the Alpha Quadrant powers until the discovery of the Bajoran wormhole in 2369, which facilitated exploration of the Gamma Quadrant. In 2370, Jem'Hadar troops annihilated numerous Bajoran and Federation colonies and ships in the Gamma Quadrant and captured Commander Sisko, as the Dominion demanded the Federation stay on their side of the "anomaly". The lead Federation starship, USS Odyssey, was destroyed by a kamikaze attack, as the Dominion demonstrated not only an alarming ability to penetrate shielding, but a fanatical devotion to their cause as the suicide attack was made on a retreating ship, solely to drive the point home to the Federation. As a result of this incident the Federation pulled the Defiant out of storage, complete with a Romulan cloaking device, and began preparations for a drastic increase in Deep Space Nine's defensive capabilities.
A Federation mission the next year to find and make peace with the Founders ended disastrously, when the peace expedition was captured and subject to hallucinogenic manipulation to test the willingness of the Federation to appease the Dominion. As a result of this incident, it was discovered that the reclusive Founders of the organization (previously unseen) were the Changelings. The Changelings justified their actions by the need to protect their species against persecution by Solids, and also spoke of a duty and inclination to "impose order on a chaotic universe."
As a result of the continued Dominion threat, numerous Alpha Quadrant powers acted with increased preparations and paranoia, one expression of which was the Romulan attempt to collapse the wormhole forcibly. Despite the Dominion's warnings, the Federation continued to chart the Gamma Quadrant. Founders began infiltrating the Alpha Quadrant, even wreaking havoc on Earth itself. In 2371, the combined intelligence organizations of the Cardassian Union and Romulan Star Empire attempted a strike into the Gamma Quadrant with a cloaked fleet, seeking to destroy the Founder's home planet and cripple the Dominion. Due to intensive Changeling manipulation, this attack force was ambushed while assaulting an abandoned planet that was believed to be the supposed Founder homeworld, and was completely crushed. It is later revealed that the main advocate of attacking the Dominion was a Changeling infiltrator. This failure weakened the Cardassians and Romulans and paved the way for Dominion intrusion into the Alpha Quadrant.
The quadrant was plunged into conflict when the Klingon Empire accused the Cardassian Union of being under the control of the Founders. When the Federation condemned the Klingon attack on Cardassia, Gowron banished Federation citizens from Klingon space, recalled their ambassadors and withdrew from the Khitomer Accords. The Federation and Cardassians fought months of armed combat against the Klingons. It was later revealed by Benjamin Sisko, Worf, Miles O'Brien and Odo that it was the Klingons themselves who unknowingly had a Changeling in their midst, pretending to be General Martok. Gowron rejoined the Khitomer Accords and joined to fight the Dominion.
Dominion War (2373–2375) 
- See main article: Dominion War
The Dominion gained a foothold in the Alpha Quadrant when Gul Dukat announced that the Cardassian Union was joining the Dominion in 2373. Open hostilities began a few months later, when the Federation mined the wormhole to prevent further Dominion ships from arriving. In response, the Dominion attacked and occupied Deep Space Nine while a Federation and Klingon task force destroyed a Dominion shipyard. The Alliance suffered brutal losses for over three months, until Captain Sisko organized a task force to retake Deep Space Nine. Forced to move early because of intelligence that the Dominion was on the verge of taking down the minefield, the Federation departed before a full force could be assembled and found themselves blocked and outnumbered by a Dominion-Cardassian fleet. After hours of bloody fighting, Dominion ships were outflanked by the arrival of a large Klingon fleet, which won the running battle and allowed the Defiant to break through to Deep Space Nine. By the time it had arrived, the minefield had been deactivated, but Dominion reinforcements were stopped in transit by the wormhole aliens known as the Prophets at Sisko's request, at a price. As a consequence of this military loss, the Dominion fleets withdrew to Cardassian territory. Deep Space Nine remained in Federation hands for the duration of the war.
After this action, the war's intensity diminished, and for a time peace negotiations were seriously discussed. Eventually, the Dominion went on the offensive again, capturing Betazed in a surprise assault. Threatened with Dominion penetration into the inner sphere of the Federation, the Alliance forces were at a disadvantage, but were saved when the Romulan Star Empire entered the war on their side in response to an alleged, but faked Dominion plan of assaulting the Empire that Sisko and Garak created. With the three main Alpha Quadrant forces fighting against them the Dominion was forced back, with the Alliance even seizing the Cardassian planet of Chin'toka.
Late in the war, the mysterious race known as the Breen joined forces with the Dominion, and launched a devastating attack against Starfleet Headquarters on Earth (DS9, "The Changing Face of Evil"). Even more disheartening was their use of a unique energy draining device that drained their enemies' entire energy supply, leaving them defenseless. Originally, only Klingon ships were immune to the effects of the Breen weapon. Late in the war, Kira Nerys, acting with the Cardassian Rebellion, stole a Breen weapon and delivered it to the alliance for reverse engineering.
A Cardassian rebellion against Dominion rule formed shortly thereafter under the leadership of Legate Damar, Dukat's successor. His most successful attack, which disabled the planetary power grid on Cardassia, was met with brutal Dominion reprisal in the annihilation of a Cardassian city and all its inhabitants. When word of that atrocity reached the Dominion fleet, in the middle of a fierce battle with Allied forces, the Cardassian ships switched sides and aided the Alliance fleet. Dominion ships retreated to Cardassia and, on the Female Founder's orders, launched a genocidal assault on the Cardassian people, ultimately killing over 800 million Cardassians in a matter of hours. Odo was able to convince the Female Founder to surrender, thus sparing the Alliance crippling losses and preventing the entire Cardassian race from being exterminated. (DS9, "What You Leave Behind")
The Founders themselves were nearly wiped out by a plague, which was revealed to be a biological weapon engineered by agents of the clandestine Federation agency Section 31, who deliberately infected Odo with it, in the expectation that he would pass it through the Great Link. The plague itself was reactive to shapeshifting and Odo's limited shapeshifting left him free of symptoms well after the Founders began to deteriorate from the condition. Julian Bashir was able to recover the knowledge of a cure from Sloan, an operative of Section 31, and manufactured a cure that saved Odo. While the Dominion was pushed back to Cardassia prime, Odo linked with the female changeling, curing her and simultaneously convincing her to surrender to the allied forces of the Federation. After the end of hostilities, the Founders were cured when Odo returned to the Great Link after a peace treaty was signed between the Dominion and the Federation.
After the War 
The state of the Dominion as a political entity at the conclusion of the war has never been discussed in Star Trek canon. The terms of the final treaty ending the war were never shown. At the conclusion of the war it is assumed that the Dominion still held vast territories in the Gamma Quadrant. Odo's return to the Great Link is partially intended to share with the other changelings the information he has about how the war concluded and what he knows from living with solids; presumably, this is to change the goals and tactics of the Founders to a system that coexists with the solids as opposed to a strategy of domination.
In the non-canon relaunch novels published by Pocket Books, it is revealed that the Dominion and Breen forces withdraw from Cardassian space. Through Odo's efforts, the Dominion permits visitors from the Alpha Quadrant to resume peaceful operations in the Gamma Quadrant, in exchange for leaving its territory alone. Odo then begins attempting to change the nature of the Dominion by convincing the founders to re-evaluate their views on other species, as well as encouraging certain Vorta and Jem'Hadar to behave more independently. The allied powers begin co-ordinating relief efforts to Cardassia, using Bajor as a staging point. The Cardassian Union is divided into separate protectorates to be occupied by the allies while the Cardassians recover. For her part in orchestrating the war, the Female Founder is sentenced to life imprisonment at Ananke Alpha, a maximum security Federation prison.
Other appearances 
The Dominion is seen in the Star Trek: Armada game. The first mission in the Federation campaign has the USS Enterprise-E defend a starbase from rogue Jem'Hadar ships. Later, the game had a Borg armada invade Dominion space to capture a cloning facility in order to resurrect Locutus of Borg as a clone of Jean-Luc Picard. They are seen to have two types of ships in the game, destroyers and battleships. The Dominion also make an appearance in Star Trek: Conquest as one of the major races and have three ship types a Jem'Hadar Scout, a Jem'Hadar Cruiser and a Jem'Hadar Battleship.