Battle of Koros Major The Battle of Koros Major was one of the first direct major Republic military offensives against the Krath . The last of the seven worlds of the Empress Teta system to resist the military coup instigated by Aleema and Satal Keto , Koros Major held off the aggressive actions of the Krath long enough for a combined Republic and Jedi task force to come to its aid . Nevertheless , even with the intervention of Jedi and Republic forces , the Krath were able to drive the joint task force from the system and lay siege to Koros Major . With the Republic and Jedi forced to retreat , Koros Major soon fell to the combined strength of the Krath armies . The Battle of Koros Major was often seen as one of several events that precipitated the Krath Holy Crusade , which was a part of the larger war against the rise of the Sith . Background . Returning from their voyage to the planet of Onderon , and in possession of newly learned Sith knowledge , the cousins Aleema and Satal Keto arrived on their homeworld of Empress Teta intent on promoting themselves and their dark side order , the Krath , to a seat of power . Mobilizing the military forces of the Empress Teta system , the Ketos led a violent coup that placed the Krath firmly in control of the established government infrastructure . Nonetheless , the seven worlds of Empress Teta refused to allow an illegal coup to take place , and thus rose up in rebellion against their newly established leaders . From their hidden bases , the seven worlds launched an organized resistance against the Krath leadership . This , however , gave the Keto cousins an excuse with which to crush the naysayers and instill fear of their rule . Using their new Sith powers , Aleema and Satal were able to lead the Krath in putting down the revolts on six of the seven worlds under their control . The only planet that was able to mount a successful long - term defense was Koros Major . Before long , word of the planet ' s fight against the Krath soon made its way across the galaxy and to the seats of both the Republic government and Jedi leadership . When word of Koros Major ' s plight against the Krath made its way to Jedi Master Arca Jeth , the aged Master was concerned . The illegal coup , he believed , deserved a response , but what caused him and other Jedi Masters to worry were the reports that claimed Sith participation in the coup . Believing that the shadow of the Sith had again returned , Master Jeth traveled to Onderon , where the Jedi Knights Ulic Qel - Droma and Nomi Sunrider along with several others were helping with a peaceful transition of governing power . Following his arrival on the planet , Master Jeth gave a quick briefing to the gathered Jedi about the coup that had transpired in the Empress Teta system . The Knights , like the Masters , were concerned when they learned about the Krath and their knowledge of Sith magic . After the conclusion of his briefing , Master Jeth advised the Jedi of their individual assignments , including both Qel - Droma and Sunrider , whom Jeth and the other masters had decided would lead the relief effort to Koros Major . Under the Jedi ' s leadership , a joint Republic - Jedi task force was assembled and dispatched in an attempt to halt the Krath advance . The battle . With Ulic Qel - Droma and Fleet Captain Vanicus directing the joint Republic - Jedi fleet , Nomi Sunrider had been directed to use her battle meditation in an attempt to sway the battle ' s tide against the Krath forces . When the joint fleet emerged from hyperspace , however , the fleet commanders found that its destination , Koros Major , was again under attack by a large Krath invasion fleet . To those observing the battle before them , it appeared that the Battle of Koros Major had already been decided . Wanting to give the Krath a chance to surrender , Qel - Droma advised Vanicus to issue a cease - fire order to the invading Krath forces . However , as Ulic had known would happen , the Krath chose to ignore Vanicus ' s order , instead continuing their attack on Koros Major . Believing that the only remaining way to stop the Krath ' s attack was to join the fight , Qel - Droma ordered the Republic fleet into attack positions . During this time , Satal asked his cousin Aleema to make use of her Sith powers to generate large Force Illusions in the shape of space grazer s , lifeforms that had , at that time , been extinct for thousands of years . Realizing what her cousin had planned , Aleema influenced the illusions into seemingly attacking the enemy task force , thus successfully scattering the joint fleet . Not understanding what was happening , Qel - Droma and many of the Republic officers expressed disbelief at the space grazers , which were once believed to have fed themselves on starships ; Sunrider , however , was able to perceive the grazers through the Force , and determined that they were actually Sith illusions . Realizing that the grazers presented no danger to the Republic - Jedi fleet , Sunrider ordered the ships under her command to keep pressing the attack against the Krath fleet . Understanding that they had underestimated the Jedi , whom they had expected to flee from the space grazers , Satal and Aleema devised a new , and seemingly much more effective , plan . Still relying on Aleema ' s Sith magic , Satal ordered an enormous number of Krath CX - 133 Chaos fighter s to launch from his command ship and target the individual ships of the Republic - Jedi fleet . In an attempt to cause further confusion among their enemies , Aleema used her Sith magic to create more illusions , but instead of enormous grazers , she created illusions of Chaos fighters . The Republic fleet prepared to open fire on the advancing enemy fighters , but Sunrider sensed through the Force that it was yet another Sith trick . Using her strong connection with the Force , she used her powers to reach out to Aleema ' s mind , and was able to take control of it , thus forcing her to lose control over the illusions . Nevertheless , even with the false Chaos fighters gone from their screens , the Republic fleet soon realized that there were still many more real fighters heading on an intercept course with them . Unable to raise their particle shields in time , the joint Republic - Jedi fleet suffered heavy casualties from the Chaos fighters as they crashed into the Republic battleships . Qel - Droma , stationed aboard the Republic command ship " Reliance I " , had been severely wounded by flying shrapnel when an enemy Chaos fighter had crashed through the ship ' s bridge . Unaware that the shrapnel had been imbued with Sith magic by Aleema Keto to turn those Jedi it infected towards the dark side , Sunrider was able to use the Force to bind her fellow Jedi ' s wounds . Realizing that the joint fleet was now operating at an ineffective fighting capacity , Captain Vanicus ordered the Republic - Jedi fleet to retreat from the Empress Teta system and jump into hyperspace . Aftermath . In response to the massive losses suffered by both the Republic and Jedi at the battle over Koros Major , the Jedi leadership ordered a gathering of Jedi to assemble on the planet Deneba , where a conclave was to be held in order to discuss the escalating hostilities resulting from Krath aggression . The conclave , however , was interrupted by a surprise Krath attack on the gathered assembly of Jedi ; due to the continued enemy aggression , Ulic Qel - Droma made the decision to infiltrate the Krath and destroy them from within . Behind the scenes . The Battle of Koros Major first appeared in the issue " " of the " " series of comics . The battle was conceived and written by authors Tom Veitch and Kevin J . Anderson , and was drawn by artist Chris Gossett . Veitch and Anderson used this battle as a spring board to introduce the Krath Holy Crusade , which was written as part of the larger Great Sith War . In the original comic appearance of the Battle of Koros Major , no " Praetorian " - class frigates or " Hammerhead " - class cruisers appear during the fight . However , when " The New Essential Chronology " was published in 2005 , a created by artist Tommy Lee Edwards established within canon that the " Praetorian " and " Hammerhead " were present and a part of the Republic - Jedi fleet .