Battle of Brentaal IV ( Clone Wars ) The Battle of Brentaal IV , also known as the Battle of Brentaal , took place five months after the Battle of Geonosis . The Galactic Republic had received information that a Separatist stronghold would be lying dormant for a few weeks opening a window of opportunity , as well that the planet was seceding to the Confederacy . The world of Brentaal IV was a vital link in the Perlemian Trade Route connecting the Core Worlds and the Tion Cluster . Holding this planet would be of great significance to the war effort . The Republic sent what should have been an adequate task force for the job , comprising of four Jedi and a strong compliment of clone troops and air land vehicles , with the entire effort being coordinated by Jedi Master Plo Koon , in orbit . The battle . As it turned out the information was bad , and the Stronghold was alive and ready for action . The Separatists ' headquarters were controlled by a Brentaal clan leader called Shogar Tok , who managed to get the planet to revolt and join the Confederacy of Independent Systems . A grand land battle ensued with Republic , and Separatist forces striking , falling back , regrouping , and striking again . When the battle seemed to be turning in the favor of the Separatists , the Jedi Master Shon Kon Ray , who was in command of the air forces contacted Plo Koon . They were outnumbered , and Jedi Master Shon Kon Ray was in favor of a full retreat . The communiqué was barely complete before his ship was shot down , killing him and his troopers . Jedi Master Shaak Ti , believing that they still had a chance to prevail , sent word to Plo Koon that she was going to attempt to rally the Republic forces at the fortress for one last push . The amount of forces that converged on the fortress showed just how well their chances looked . About four troops found their way to meet Jedi Master Shaak Ti at the entrance to the fortress sewers . They decided that the Republic ' s best chances laid in the destruction of the fortress ' ion cannon batteries and shield generators , that way an airship could do a bombing run and completely decimate the opposition . As Master Ti ' s force moved into the fortress , they realized what it really was — a prison . The commotion on the surface had incited a jail break . Master Ti , realizing the need for more troops , guaranteed the prisoners their freedom if they would help her bring the fortress down . The group of prisoners included the hidden Jedi Knight Quinlan Vos , who had been lost to the Jedi council for some years ; Sagoro Autem , a Senate Guard gone renegade ; and a criminal named Lyshaa , who had been imprisoned on Brentaal IV . Lyshaa was also the one who claimed the life of Ti ' s former Padawan , Fe Sun . The force progressed throughout the fortress as long as they could until they had to split up . Quinlan Vos and Autem would go after the guns , the single clone trooper left in the company would go after the shield generators , and Master Ti and Lyshaa went off to capture Shogar Tok . The gun team was bogged down by a roving guard squad on duty , and participated in a brief fire fight with them before surrendering briefly . Quinlan Vos used his Force powers to turn the tables , and with his sabotage done , the guns were disabled . The clone trooper assigned to the shields was critically wounded by a grenade launcher , but managed to rig his rifle to self - destruct , destroying the generator . Master Ti had the idea to use Lyshaa to tempt Shogar Tok with her womanly charms . She did , but eventually betrayed Master Ti , and shot her . All seemed lost until Master Ti regained consciousness and killed Shogar Tok . She spared the treasonous team member , who died on her escape in a lightstorm chamber immediately afterward . Aftermath . A clone trooper who had been present during the battle later participated in an attack on the planet Tirahnn . During the battle there , the Clawdite Separatist spy Braxus Lyn disguised herself as Jedi Master Ezar Elasra , so that she could free the captured Separatist commander Zolghast . Because of Quinlan Vos ' actions during the Battle of Brentaal IV , the trooper believed that Elasra had also turned against the Republic , so he sent a team of Republic agents to try and find Zolghast and the false Elasra .