The Yuuzhan Vong War, also called the Yuuzhan Vong invasion, was a Galaxy-wide conflict between the extragalactic Yuuzhan Vong and the beings of the Galaxy proper.

The invasion was the most devastating crisis the Galaxy had ever faced. The cost of of the Yuuzhan Vong's actions was very dear to the Galaxy, with estimated deaths across the Galaxy near 365 trillion sentients, or roughly 61 thousand planets with a population of six billion each. Thousands of worlds were also Vongformed by the invaders, including the galactic capital Coruscant.


Origins

There is a slight possibility that, as early as 3,963 BBY, at least one scout had reached at least the outskirts of Galaxy. In that year, a group of Mandalorian Neo-Crusaders under Canderous Ordo encountered what would later come to be known as a coralskipper, disguised as an asteroid in the Crispin system. It fled beyond the edge of the Galaxy once discovered. The ship may have been the first ship ever to enter the Galaxy, making thus a "first contact" before the known arrival, millennia later.

Between 229 and 89 BBY, the living planet Zonama Sekot—a seed of Yuuzhan'tar—arrived in the Gardaji Rift. In 32 BBY, an advanced force of Yuuzhan Vong—termed "Far-Outsiders" by the planet's inhabitants—discovered Zonama, and noting the similarity to Yuuzhan'tar (though not drawing the connection), attempted to colonize it. However, when the Vong attempted to settle, Zonama Sekot's biosphere killed off the Vong flora and fauna, provoking outrage from them. Although Sekot attempted to negotiate with them, they began an assault upon the planet. After two years of Sekotan defense, at a high cost, the assault was called off after the arrival of the Jedi Knight Vergere, who demanded the attack cease in return for going with the Vong. That agreed to, the Vong force departed with the Jedi towards the Unknown Regions.

Information of Vong activity within the Galaxy for the next few decades is scarce. Around 25 BBY, they established a base on the planet Bimmiel. After the formation of the Galactic Empire, Imperial scientists ran into the Vong on that planet. As one of Palpatine's justifications for maintaining the Imperial Starfleet after the end of the Clone Wars was to ward off the threat of extra-galactic invasion, he may have known about the approaching Yuuzhan Vong fleet.

Although it is not known for sure if the upper echelons of the Imperial government knew about the Vong, it is known that at least one officer did. Sometime between being dispatched to the Unknown Regions in 3 ABY, and his return in 9 ABY, Grand Admiral Thrawn encountered the advanced Vong force hiding in the Unknown Regions. The threat of the advancing invaders was one of his primary motivations to reunify the Empire, as he felt that the Empire stood a much better chance against the Vong than did the New Republic.

The Vong of the advanced scouts themselves shared that sentiment. After the formation of the Imperial Interim Council in 11 ABY, following the final death of Palpatine, Vong agent Nom Anor was tasked to infiltrate the Council. He did so and manipulated its leader, Xandel Carivus, arranging the deaths of many Councilors and furthering the internecine strifes that led to the fatal fracturing of the Imperial Remnant.

It is roughly around this time that the Vong began meddling in the high politics of the Ssi Ruuvi Imperium. They installed one of their own, E'thinaa, as Shreeftut, and manipulated the rise to power of the Keeramak, with the goal of eventual use of the Ssi-Ruuvi in their invasion.

In 22 ABY, Vong agent Yomin Carr infiltrated the ExGal Society, stationing himself at the ExGal-4 base located along Vector Prime at Helska 4.

In 24 ABY, just before the planned start of the invasion, Supreme Overlord Quoreal began to waver. Worried about the possibility of once more encountering Zonama Sekot, he developed the opinion that it would be best to move on to another galaxy. However, under the influence of Onimi, Shimrra Jamaane, with the support of some of the more aggressive Domains, launched a coup, murdered Quoreal and took his place, ensuring that the invasion would go forth as planned.
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Major Events

* 25 ABY—Mission to Sernpidal, the Yuuzhan Vong cause Sernpidal's moon to crash on the planet killing millions including Chewbacca.
* 25 ABY—Battle of Ithor, Ithor is reduced to a fireball and rendered uninhabitable.
* 26 ABY—Battle of Kalarba, destruction of Kalarba, Indoboc, and Hosk Station by the Yo'gand's Core tactic.
* 26 ABY—Battle of Duro, Nom Anor sabotages terraforming of Duro.
* 27 ABY—Mission to Myrkr, destruction of voxyn cloning facility by Jedi strike force, deaths of Anakin Solo and most of the team.
* 27 ABY—Fall of Coruscant, conquest of Coruscant by Yuuzhan Vong, deaths of Borsk Fey'lya and millions of refugees.
* 27 ABY—Battle of Borleias.
* 28 ABY—Second Battle of Ylesia.
* 28 ABY—Battle of Ebaq 9, deaths of Tsavong Lah and Vergere.
* 28 ABY—Battle of Bastion, invasion of Imperial Remnant.
* 28 ABY—Battle of Esfandia.
* 28 ABY—Battle of Bilbringi.
* 29 ABY—Battle of Mandalore, Mandalorian Protectors enter the war.
* 30 ABY—Liberation of Coruscant, deaths of Shimrra, Onimi, and Nom Anor.

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History

On the distant world Rhommamool, the invaders, through Nom Anor disguised as the leader of the Red Knights of Life, stirred up rebellion between Rhommamool and its neighbor Osarian. The same agent was also responsible for infecting Mara Jade Skywalker and a hundred others with a fatal Yuuzhan Vong disease. As a result, elite Praetorite Yuuzhan Vong conquered Helska IV and brought down Sernpidal's moon upon the planet killing millions including the famous Wookiee Chewbacca. The Yuuzhan Vong also encountered the Jedi whom they considered the worse of a galaxy of infidels.

The Yuuzhan Vong then began attacking worlds in their path with much ease. Bimmiel, Dantooine, Dubrillion, and Obroa-Skai were among the many worlds captured while Ithor was turned into a fireball and rendered inhabitable. Soon arose the problem of refugees from shattered planets that the government could not ignore. The government began to blame the Jedi for starting the conflict with the aliens. Knowing that the Jedi were their worst enemies, they offered the galaxy a ceasefire in exchange that the Jedi be handed over to them. Then in a shock tactic, the invaders launched an attack on the other side of the galaxy at the planet Fondor which was close to the capital Coruscant itself. During the Battle of Fondor, the Yuuzhan Vong suffered heavy losses when Centerpoint Station was fired by Han Solo's cousin Thrackan Sal-Solo.

The Yuuzhan Vong eventually struck a deal with the Hutts that allowed them to pass through Hutt Space unharmed. But the Hutts were betrayed, and their worlds were attacked. The Peace Brigade, an organization of galactic beings that supported Yuuzhan Vong operations, was formed through Yuuzhan Vong agents. This organization also helped the Yuuzhan Vong capture Jedi. On Yavin 4, Yuuzhan Vong of the oppressed Shamed Ones came to admire the Jedi after a shamed Vong Vua Rapuung helped Anakin Solo rescue Tahiri Veila. As a result, a heresy was formed that infiltrated all the levels of Yuuzhan Vong society, particularly the underclass. With Coruscant rapidly becoming surrounded, the Yuuzhan Vong created the fearsome voxyn beasts that hunted Force-sensitive individuals. A Jedi strike team lead by Anakin Solo then destroyed the voxyn breeding facility, though most of the team was slain. Anakin himself died (or rather, disintegrated when his body overflowed with the Force) while he covered the retreat of the remaining Jedi. On Coruscant, the Yuuzhan Vong captured the planet after a long battle, which saw the suicide-sacrifice of Chief of State Borsk Fey'lya, and had it Vongformed, renaming it Yuuzhan'tar.

Following the conquest, Borleias became the capital world. The terraforming of Coruscant was sabotaged by the Jedi Knight Jacen Solo. The New Republic, having moved to Mon Calamari, where Cal Omas was elected Fey'lya's successor as President of the New Republic. The Defense Force then prepared to attack the weary Yuuzhan Vong. At the same time the Alpha Red Project, which would have destroyed the Yuuzhan Vong and their organic technology was destroyed by Vergere. The Yuuzhan Vong were then lured into the Deep Core moon Ebaq 9, and their task force was destroyed. On Ebaq 9 Tsavong Lah was slain by Jaina Solo and Vergere sacrificed herself to eliminate the rest of the invaders. At this point, the New Republic was reorganized as the Galactic Federation of Free Alliances, also called the Galactic Alliance.

After the victory, Galactic Alliance heroes Han Solo, Leia Organa Solo and the Twin Suns Squadron headed out to find powerful allies while the Jedi Master Luke Skywalker began a mission to find the legendary living planet Zonama Sekot. The Jedi stumbled upon a Yuuzhan Vong attack against the Imperial Remnant and helped fight the invaders off, gaining a powerful ally. Meanwhile, the Yuuzhan Vong Nom Anor disguised as the prophet Yu'Shaa began stirring up the heresy on Yuuzhan'tar (formerly Coruscant) posing as a Shamed One after fleeing the wrath of Supreme Overlord Shimrra for suggesting the disastrous Ebaq 9 mission.

Luke's team headed into Chiss space to obtain information on the Unknown Regions and, hopefully, Zonama Sekot. Meanwhile, Han and Leia's team headed to Bakura, where they thwarted a new Ssi-Ruuk invasion. The Jedi searched the Chiss libraries for the missing planet. Later, the Jedi located Zonama Sekot, but so did the Yuuzhan Vong. Sekot drove off the Vong attackers as the Jedi landed on its surface. Meanwhile, Han and Leia attempted to bring a communication station in the Unknown Regions back online while the Jedi negotiated with the living world to help them in the war.

However, Yuuzhan Vong operatives stole one of Zonama Sekot's organic starships and the Shaper Nen Yim discovered that Sekotan technology was extremely similar to Yuuzhan Vong technology and that her people have gone terribly astray. Nom Anor disguised as Yu'Shaa along with Nen Yim and the priest Harrar arrived on Zonama Sekot where they discovered that many of the species from their galaxy could be found on the planet. A plot by Nom Anor to destroy the living world was luckily foiled. Han and Leia also managed to rescue hundreds of high-ranking Alliance prisoners facing sacrifice to the enemy's gods. The Galactic Alliance prepared a fleet to defend Mon Calamari from the invaders while another Alliance fleet engaged the Yuuzhan Vong at Coruscant. In the end, Supreme Overlord Shimrra was killed and the Yuuzhan Vong were defeated. They surrendered and were placed under Zonama Sekot's jurisdiction.
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Aftermath

Zonama Sekot then revealed itself to be the seed of the long-dead original Yuuzhan Vong homeworld. One of the surrender terms the Galactic Alliance placed before the Yuuzhan Vong was that they were to help rebuild Coruscant. The Galactic Alliance moved its temporary capital to Denon, and eventually went back to Coruscant after the rebuilding was complete.

After the cease-fire, the remaining Yuuzhan Vong were recalled from across the galaxy to Zonama. Zonama, with its Yuuzhan Vong, disappeared back into the Unknown Regions, so that the Vong could live in peace and renew their relationship with Sekot. They planned to abolish their caste system and eliminated the posts of warmaster and Supreme Overlord, although Choka seemed to remain their de facto leader.

The Bothans, however, were unforgiving for the death of Fey'lya, and declared a state of ar'kai genocide against the Yuuzhan Vong, sending ships into the Unknown Regions to hunt for Zonama. By 36 ABY, however, their primary efforts had been foiled by the Alliance, which had impounded the ship detailed for the expedition.