Battle of the Ryndellia system / Legends A battle took place in 22 BBY in the Ryndellia system . A Galactic Republic medical convoy consisting of several " Pelta " - class frigates and a " Venator " - class Star Destroyer escort and commanded by clone troopers and Jedi was passing through the Ryndellia system . The convoy was ambushed by the Confederate " Subjugator " - class heavy cruiser " Malevolence " , under the command of General Grievous . The Confederate warship eliminated the Republic transports with its laser guns and neutralized the power of the final fleeing frigate with its ion pulse cannon s . On Confederate Head of State Count Dooku ' s orders , the " Malevolence " headed to attack a Republic medical center in the Outer Rim that was treating over 60 , 000 wounded Republic clones . Prelude . In 22 BBY , during the Clone Wars , the Confederacy of Independent Systems built a superweapon , the " Subjugator " - class heavy cruiser " Malevolence " , that was capable of defeating numerous Galactic Republic fleets at a time with its ion pulse cannon s . The cannons neutralized the power of their targets , leaving the quarries vulnerable to laser fire from the " Malevolence " without the ability to use deflector shields . Under the command of General Grievous , the " Malevolence " eliminated several Republic task forces , leaving no survivors to spread the news of the warship or its unforeseen ion cannons . Because its origins and methods of attack were unknown to the Republic , the " Malevolence " was dubbed the " mystery weapon . " The random targets did not hint at a pattern , and the unpredictability of future targets spread fear across the citizens of the Republic . After Jedi General Plo Koon tracked the " Malevolence " to the Abregado system , his fleet of several " Venator " - class Star Destroyers was attacked by the warship ' s ion cannons on Grievous ' s order . The Confederate Head of State Count Dooku was aboard the warship and ordered the pods to be eliminated , not intending to allow the Republic to learn of the warship and its weapons . However , Koon and several clone troopers were rescued by Jedi General Anakin Skywalker and his Padawan , Jedi Commander Ahsoka Tano , and were able to escape the " Malevolence " , taking the knowledge of the warship to the Republic . Dooku considered the battle to be a defeat , and his trust in Grievous was diminished , while Grievous himself resolved to ambush other Republic forces . Grievous cut a swath of destruction in the Vanik , Ichtor , and Vondarc system s before arriving in the Ryndellia system . The battle . A Republic medical convoy , consisting of several " Pelta " - class frigates as well as a " Venator " - class Star Destroyer escort , was passing through the Ryndellia system when it was intercepted by General Grievous and the " Malevolence " near the planet Ryndellia . The warship attacked the cruiser and two of the frigates with its numerous turbolaser cannons , while the last frigate fled . Noticing this , Grievous ordered the ship ' s ion cannons to be fired at the frigate . The clone troopers piloting the vessel attempted to jump to hyperspace but were unable to set the coordinates in time to do so . The frigate ' s power was neutralized by the ion cannons , and the " Malevolence " directed laser fire at it . When a B1 battle droid commented on his inability to target anything , Grievous smashed the droid aside . Dooku was watching the cyborg general ' s progress through a holotransmission and was pleased that the medical convoy had been eliminated . The Sith Lord had recently met with his Sith Master and had learned of the Republic ' s secret Outer Rim medical center , which was treating over 60 , 000 wounded clones . Dooku assigned the medical center as the " Malevolence " new target , and the assignment boosted Grievous ' s confidence , as it showed that the count had not completely lost his faith in the general since his recent setback at Abregado . As the damaged frigate deployed several escape pods , Grievous ordered the pods to be targeted . Aftermath . Following Dooku ' s orders , the " Malevolence " jumped to hyperspace and headed for the medical center . General Anakin Skywalker received a report from Admiral Wullf Yularen of the medical convoy ' s destruction in the Ryndellia system , and the Jedi deduced that Grievous was heading for the medical station . As Skywalker had already planned a counterattack on the " Malevolence " , he intended to intercept the warship before it could attack the medical base . Skywalker led Shadow Squadron in recently acquired BTL - B Y - wing starfighter s on a shortcut through the Kaliida Nebula , and was accompanied by his Padawan , Ahsoka Tano , as well as General Plo Koon . Admiral Yularen warned the Kaminoan Nala Se — the medical station ' s administrator — of the impending danger , and the station began evacuations of its patients . Behind the scenes . The battle of the Ryndellia system appeared in " Shadow of " Malevolence " , " the third episode in the of the 2008 .