Final Order

"The Resistance is finished. The Sith fire burns. All worlds surrender or die. The Final Order begins now."

- Darth Sidious

The Final Order, also known as the New Empire, was the theocracy ruled by the Dark Lord of the Sith Darth Sidious from the hidden Sith world of Exegol in the galaxy's Unknown Regions that was established by the Sith Eternal. As part of their goal to establish a new galactic Sith Empire and exact the Emperor's revenge, the Sith Eternal spent years building the massive Sith fleet, which consisted of Xyston-class Star Destroyers capable of destroying planets in a single sustained burst.

In 35 ABY, the First Order joined forces with the Sith Eternal to form the Final Order. However, the First Order and the Sith Eternal were ultimately defeated at a battle on Exegol before the fleet could depart to conquer the galaxy, preventing the Final Order from ever truly taking form.

Emerging from the shadows
"What could you give me?" "Everything. The might of the Final Order will soon be ready. It will be yours&hellip; if you do as I ask. Kill the girl! End the Jedi, and become what your grandfather, Vader, could not. You will rule all the galaxy as the new Emperor."

- Kylo Ren and Darth Sidious

In 35 ABY, the Sith Eternal revealed themselves from the Unknown Regions on Exegol by broadcasting a message to the wider galaxy, which declared revenge from fallen Emperor and Dark Lord of the Sith Darth Sidious. Upon learning of this, Kylo Ren, Supreme Leader of the First Order, determined to destroy any potential threats to his rule, acquired a Sith wayfinder owned by his grandfather and imbued by the Force that contained coordinates to a location in the Unknown Regions. Ren arrived to the Sith Citadel below Exegol, where he found the Sith loyalists and the Emperor, who divulged that he had created the former Supreme Leader Snoke, and that he had been every voice Ren had heard inside his head, including that of his grandfather, Darth Vader. The Sith Lord then offered command of the Sith fleet and the evisioned Final Order to Ren, but only if he successfully eliminated Rey, the last Jedi.

A new Empire
"As I served you in the old wars, I serve you now."

- Enric Pryde, to Darth Sidious

After Kylo Ren abandoned the dark side and the First Order and returned to the light side as Ben Solo, Allegiant General Enric Pryde, from his Resurgent-class Star Destroyer Steadfast, pledged himself to Emperor Palpatine once more, aligning the First Order with the Sith as part of their final push for galactic conquest, thus beginging the Final Order and the rise of a new Sith Empire.

The Emperor ordered General Pryde to use a Sith Star Destroyer he had dispatched from Exegol to destroy a planet close to the Resistance with its axial superlaser as a show of force. General Pryde had the Star Destroyer sent to Kijimi, and the capital ship's superlaser sent down a red laser beam to strike the surface, using red bolts of energy to hit the planet, which caused massive shockwaves to erupt across Kijimi, and eventually, the laser beam broke through the core of the world and ripped it apart. The destruction of Kijimi was broadcast across the galaxy by the Sith Eternal, who proclaimed that the Resistance was finished and demanded for every world to surrender.

Downfall
"You are nothing! A scavenger girl is no match for the power in me! I am all the Sith!" "And I...am all the Jedi."

- Darth Sidious and Rey, during the Battle of Exegol

However, the Final Order was defeated at a battle on Exegol by the Resistance and their allied fleet, preventing the Final Order from deploying off of Exegol and establishing the New Empire. With the Sith fleet smashed, the First Order began to face revolts as people rose up against them across the galaxy.

Military
"Do not fear their feeble attack, my faithful. Nothing will stop the return of the Sith!"

- Darth Sidious, to his Sith devotees

The Sith fleet was composed of hundreds of Xyston-class Star Destroyers. which were based on the design of the older Imperial I-class Star Destroyers used by the Imperial Navy of the Galactic Empire. However, Xyston-class Star Destroyers were larger, had red accents along the hull of their vessels, and were equipped with a large axial superlaser capable of destroying planets, which took the place of a standard Imperial-class Star Destroyer's main hangar space. These Star Destroyers housed TIE/dg starfighters, with triangular wings and red accents, which were capable of ship-to-ship combat, and Sith troopers, including their variant Sith jet troopers, which were deployed on AAL-1971/9.1 Troop Transports and divided into traditional Sith legions, each of which were named after deceased Sith Lords, of 5,000 soldiers.

Appearances

 * Star Wars: Episode IX The Rise of Skywalker
 * Star Wars: The Rise of Skywalker: A Junior Novel