Battle of Korriban (TVC)

"General, may I make a suggestion?"

"Go ahead."

"Can we stop invading planets covered in dust and battle droids? Geonosis was bad enough."

- CC-1451 (Wraith) and Jeden Vesal after the Battle.

The Battle of Korriban, also known as the Invasion of Korriban or Operation Unity (because of the multiple Clone battalions fighting alongside each other) was a battle that took place during the Clone Wars, but was not part of the confllict, between the Jedi and Republic against a faction of Dark-side-users named the Grand Sith Order. Bloody and afterward secretive, the existence of the Sith and the mission were kept secret after the battle, and even Darth Vader himself never discovered of the battle's existence.

Background
In 20 BBY, Jeden Vesal intercepted a smuggler's frigate thought to be carrying a Sith artifact. However, one smuggler escaped and destroyed the ship, forcing Jeden to pursue them. Jeden tracked the smuggler, a Twi'lek named Nara Sa-el, to be hiding in an inactive volcano on Ord Mantell, and landed on the planet with his Clone troopers, named Nightingale Squad. After reaching the volcano, Jeden discovered Nara was actually a Force-user who called herself Darth Nelox. Nelox was killed by Jedens second-in-command, Commander Phoenix (CC-1450), but first proclaimed that she controlled the 'Grand Sith Order', a faction Jeden guessed wasn't linked to Count Dooku. After informing the Jedi Council, Jedi Masters Kit Fisto and Obi-wan Kenobi arrived to help Jeden find out more about the Grand Sith Order.

Jeden deduced that the group was likely based on Korriban, and travelled there with Nightingale Squad and his fellow Jedi. Obi-wan and Phoenix revealed themselves by attacking three Sith, killing 2 and letting the third escape injured. Jeden captured a prisoner, a teenager named Koses Lik-Har, who was actually a user of the Light side and was willing to give up the Sith's secrets. Koses revealed that Nelox's heir, Darth Krasor, had found a factory for ancient Sith Imperial battle droids, and planned to start a war with the Republic for killing Nelox: his lover.

Jeden, armed with this knowledge, relayed it to Mace Windu. After some consultation, Mace decided to launch an invasion of Korriban to eliminate the Sith as quickly as possible. As soon as the 44th Special Forces Division of Vesal and 212th Attack Battalion of Kenobi were prepared, the invasion was launched: the intent being to eliminate the Sith and Darth Krasor by any means.

The First Offensive
Jeden and Kenobi arrived three miles away from the Valley of the Dark Lords and created a landing zone for Republic tanks and walkers, before a plan was made. Jeden, Kenobi and the 44th would scale the cliffs down into the Valley, clearing a path to the Sith Academy while the 212th flanked the cliffs and gave supporting fire with tanks and heavy gunners. The army made the journey through the night to give the element of surprise, before they discovered the Sith already knew, opening fire on the Clones before they could begin to climb down. After a group of bombers was shot down by a missile turret, Jeden decided to go ahead with the offensive - without air support.

Jeden and Obi-wan arrived at the bottom and dispatched of the battle droids supressing the Clones, before the soldiers arrived, forced to be helped by 212th infantry as they pushed on a line of bunkers and trenches built by battle droids to keep them back. Luckily, they could break through. Wraith, one of Jeden's men, used a stealth generator to sneak towards a bunker, before destroying it with a thermal detonator. The Jedi and Clones then moved up, securing the first line of trenches and pushing into the ruins of the ancient Sith tombs. However, Krasor sent his acolytes at the army, decimating the Clone vanguard who tried to push towards the main line of defenses (and the strongest) and the Republic were pushed back.

When it seemed as though no progress would be made, ten ARC-170 starfighters destroyed the missile turrets, before the trenches of the Sith were bombarded by Y-wing bombers. When the Sith counter-attacked, Jeden and Kenobi were saved by Mace Windu, backed up by Master Agen Kolar of the Council and around 40 other Jedi. After a fierce series of close-quarter battles in Sith tombs, the rear trenches were secured, the next destination being the Sith Academy.

Duel of the Academy
A plan of attack was devised by Windu on how to engage the Sith: while his men flanked around, destroying the battle droids alongside the other Clones, the Jedi would go head-on with the remaining Sith forces, which were becoming depleted. The Sith and Jedi met before the Academy, during which Jeden and Krasor finally met and exchanged words. When Jeden tried to convince Krasor to surrender, the latter leapt at the Jedi, beginning the battle.

The battle droids were soon defeated and the Sith were losing, but the battlefield fell still as both sides watched Jeden and Krasor duel. When Jeden was knocked down, one Jedi Padawan, a young Nautolan, managed to attack Krasor, but missed. Krasor then flung the boy into a spike, piercing him and leaving him to bleed. Jeden, disgusted, launched a final series of attacks at the Sith Lord, slicing off his leg. As Krasor moaned in pain, Jeden comforted the dying Nautolan boy. However, Krasor wasn't done.

Refusing to let the Sith or Republic live on without him, Krasor activated explosives in the Valley, the Academy and on the final battlefield, sending shrapnel and dust everywhere. Hundreds of CLones were killed in an instant, while the entire Sith Order was killed in one blow with no survivors. Jeden managed to make it to the trenches with Wraith (who had been blinded by the dust for a short time) before they were rescued by Master Kolar and Phoenix. The battle was over, but Jeden arrived on his ship to find that the Clones had taken massive casualties: it was a Pyrrhic victory.

Aftermath
The battle proved to be one of the bloodiest for the Clones, despite not being part of the Clone Wars. It also took multiple Jedi lives, almost all being Padawans still in training. However, the Sith fared even worse. Due to Krasor's suicidal vengeance, the entire Order was wiped out by the explosion, destroying most of the Valley and destroying Nelox's small empire.

Due to the fact that a resurgent group of Sith had returned, the Jedi decided to keep the mission secret. They struck Korriban from all space charts, making it available for travel only to Jedi Masters. Clones and Jedi alike were sworn to secrecy, and they stuck to their vows so loyally that Darth Vader never discovered the battle even happened, despite his Stormtrooper's loyalty to him.