Battle near the Kaliida Nebula/Legends

"Anakin. Were you able to contact Master Luminara?''" "''Yes, master. She's busy with a fleet of Separatist reinforcements nearby. She won't be able to give support until she's turned them away."

- Obi-Wan Kenobi and Anakin Skywalker

In 22 BBY during the Clone Wars, a battle took place near the Kaliida Nebula. Jedi General Luminara Unduli engaged Confederate reinforcements that had been dispatched to aide the Confederate warship Malevolence, which had suffered damage after an attack by Galactic Republic forces, and Unduli was able to successfully able to dispatch her opponents.

Prelude
"Our bombers will attack at high speed to avoid the enemy's ion weapon. We'll concentrate our firepower on the bridge superstructure, here. We destroy Grievous, we can bring the war to a quicker end."

- Anakin Skywalker briefs Shadow Squadron on a plan to counterattack the Malevolence

Around 22 BBY during the Clone Wars, the Confederacy of Independent Systems built a superweapon, the Subjugator-class heavy cruiser Malevolence, capable of destroying numerous Galactic Republic fleets with its ion cannons. The cannons neutralized all power to their targets, leaving their quarries defenseless and vulnerable to fire from the warship's laser cannons. Under the command of General Grievous, the Malevolence began a series of strikes on Republic task forces that left no survivors to inform the Republic of the weapon or its methods of attack. However, following the Battle of Abregado, the superweapon was revealed to the Republic. Jedi General Anakin Skywalker devised a plan to counterattack the Malevolence with a squadron of bombers, and was accompanied by his Padawan, Jedi Commander Ahsoka Tano, as well as High Jedi General Plo Koon.



The Confederate Head of State Count Dooku gave Grievous a new target&mdash;the Kaliida Shoals Medical Center near the Kaliida Nebula, treating over 60,000 wounded Republic clones, and the Malevolence proceeded to the medical station. Skywalker led Shadow Squadron to intercept the warship before it could destroy the medical base, and damage to the Malevolence ' s ion cannons caused them to explode, inflicting further damage to the warship. Several Republic Venator-class Star Destroyers arrived in the system under the command of High Jedi General Obi-Wan Kenobi and Admiral Wullf Yularen and began to attach the Malevolence. Unable to retreat to hyperspace because of damage to the warship's hyperdrive, Grievous was forced to call in reinforcements.

Confederate reinforcements
A Confederate fleet was dispatched to the nebula to aid the fleeing Malevolence and prevent the warship's destruction at the hands of the Republic forces. However, Jedi General Luminara Unduli intercepted the Confederate forces before they could arrive in the nebula, and the Jedi engaged the Confederate fleet. Skywalker contacted Unduli, and Unduli promised her support once she had dispatched her opponents. Unduli was later able to successfully rout the Confederate reinforcements.

Aftermath
Senator Padmé Amidala was tricked by Dark Lord Darth Sidious under his guise of Supreme Chancellor Palpatine into traveling to the Kaliida Nebula, and the senator was pulled aboard the Malevolence, as Grievous intended to use her as a hostage to guarantee the warship's escape. Skywalker and Kenobi boarded the warship to rescue her, and Koon and Tano contacted Unduli for support against the Malevolence, as they would need reinforcements to destroy the Malevolence once the senator had been rescued. Unduli promised her support and proceeded to the Kaliida Nebula to give aid to the Republic fleet. However, Skywalker was able to sabotage the warship's navicomputer, and after Skywalker, Kenobi and Amidala returned to the Republic fleet, the Malevolence attempted to jump to hyperspace. Before Unduli arrived with her reinforcements, Skywalker's sabotage caused the Malevolence to crash into a nearby moon.

Behind the scenes
The battle was first mentioned in "Destroy Malevolence," an episode in the first season of the 2008 Star Wars: The Clone Wars television series. The battle served as a backstory for the episode, as the episode's main focus was the Battle of the Kaliida Nebula.