Attack on the Imperial command center In the year 19 BBY insurgents attacked an Imperial command center on the planet Vaklin as part of the Vaklin insurgency . The insurgents attacked the center in the hope of rescuing a Jedi Knight who was imprisoned there . During the attack they instead encountered the Sith Lord Darth Vader , who killed the entire assault force . During the chaos the Jedi managed to break free and attack Vader as well , but he to was killed by the Sith . Prelude . Shortly after the end of the Clone Wars between the Galactic Republic and the Confederacy of Independent Systems , an insurgency took place on the planet Vaklin against the newly formed Galactic Empire . The Vaklin insurgents were lead by three members of the Jedi Order , and so the Sith Lord Darth Vader traveled to the planet to lead the Imperials in crushing the insurgency as part of the Great Jedi Purge . Vader killed one Jedi Master and then captured a Jedi Knight , leaving only the Jedi Master Cho ' na Bene at large . Bene continued to harass Vader ' s forces after the Knight ' s capture , and twelve days after the capture ambushed Vader whilst he was on patrol . Shortly after the ambush , Vader returned to the city Vaklin Zenith , where an Imperial command center was located . At the command center he discussed the Insurgency with several Imperial officers , before visiting the Jedi Knight , who was imprisoned in the center . Vader hoped that Bene would be drawn out of hiding to attempt to rescue the Jedi , but sucesfully interrogated the captive as to the Jedi Master ' s location in case he didn ' t work as bait . The attack . The attack began with an explosion caused by an explosive device planted inside a MSE - series droid , which the insurgents sent directly into the command center . This caused damage to three levels of the building and allowed three armed insurgents to enter near the holding cells , where they encountered Vader interrogating the Jedi . The insurgents attacked Vader , but using the Force , he collapsed part of the passage they were fighting in and killed the trio . The Sith lord ' s distraction allowed the Jedi prisoner to break his stun cuffs and also attack the Sith , but Vader cut him down with a single sweep of his lightsaber . One room damaged by the attack was the conference room in which Vader had previously spoken with Imperial Officers , several of whom were still there when the room collapsed . Whilst Vader fought the insurgents elsewhere in the building , Oniye Namada , a Major of the Imperial Security Bureau , rallied the officers in the conference room and looked after one who had been wounded , with the help of two other officers from the meeting . Aftermath . After the attack the Imperial forces were initially pleased with their response , considering the attack a failure . The local population however saw the strike as a valiant effort and remembered the Jedi as a martyr and a hero . When the Imperials were forced to retreat to a " Imperial I " - class Star Destroyer orbiting the Vaklin due to the damage to the center , the local celebrations got even worse . Angered by the populations response , Vader then ordered Namanda to begin a purge of anything Jedi - related from Vaklin , in an effort to make them forget the Jedi Order and stop supporting the insurgency . The details of the attack were later recorded by Namanda in an ISB report titled I - 1807 - VAK . Behind the scenes . The attack first appeared in 2012 in " " , a comic book in the " " series . The comic was written by Alexander Freed and penciled by Marco Castiello and Andrea Chella .