Second Battle of Obroa - skai The Second Battle of Obroa - skai was a battle between the New Republic and the Yuuzhan Vong , occurring in 28 ABY . Pre - battle . New Republic Intelligence Service received information that Supreme Overlord Shimrra was on the move to his new capital of Yuuzhan ' tar , the Vongformed Coruscant . Later , agents on the ground at Obroa - skai learned that a large fleet was moving to into the system , presumably to view something of importance in the libraries . NRI hastily assumed that it was Shimrra himself , and Jaina Solo came up with a plan to use the captured Ro ' ik chuun m ' arh frigate " Ksstarr " , nicknamed " Trickster " , to attack the Yuuzhan Vong fleet , with a view to killing Shimrra and crippling the Yuuzhan Vong leadership . Battle . When the Yuuzhan Vong fleet arrived in - system , Jaina , aided by Jedi Knights Lowbacca and Tesar Sebatyne , managed to make the " Trickster " appear damaged . As the Yuuzhan Vong forces slowly moved towards Obroa - skai , trying to contact their " damaged " frigate , a task force of New Republic warships under the command of General Keyan Farlander leapt into the system . From his flagship , the " Mon Adapyne " , Jedi Madurrin coordinated with the various Jedi leading the starfighter squadrons . Flying in ultra - secret snoop craft , Wraith Squadron deployed a yammosk jammer . Its effect was short - lived , as Yuuzhan Vong forces continued to be coordinated , responding to each move made by the New Republic forces . The New Republic formation began to take a hammering ; the Corellian gunship " Pulsar " was disabled , and the cruiser " Far Thunder " was damaged nearly beyond repair . As losses amongst pilots mounted , Jaina realized that the tactic had not failed — there was a second yammosk present . Contacting the Wraiths again , Jaina ordered them to deploy a second jammer . The effect was instant ; the initially coordinated Yuuzhan Vong fleet began to show signs of confusion . New Republic forces , long used to imperfect communication , pounced on this disorganization . Rogue Squadron and the Dozen - and - Two Avengers managed to destroy numerous coralskippers , while decoy dovin basals attached to Yuuzhan Vong warships caused them to open fire on one another . The final act of the battle occurred when a Hapan fleet under the direct command of Queen Mother Tenel Ka jumped into the system , completing the trap . The Hapan warships had been equipped with quick - charge turbolasers , a gift from the New Republic following the disaster at Fondor . The two Hapan Battle Dragon s and three " Nova " - class battle cruisers tore into the Yuuzhan Vong formation , destroying the two large troop transports and laying siege to the massive command cruiser . As the Yuuzhan Vong flagship began to break apart , another frigate was destroyed by New Republic cruisers . The battle turned into a complete rout , with only a single Yuuzhan Vong frigate managing to escape . Aftermath . Faulty intelligence . It was only after the battle that the New Republic fleet learned that Shimrra had not been killed . The flagship of the Yuuzhan Vong forces was Komm Karsh ' s , a Supreme Commander . Tenel Ka remarked that the victory was still noteworthy , as the rank of the Supreme Commander was second only to that of Warmaster in the Yuuzhan Vong military hierarchy . Major victory . As noted by Tenel Ka , the battle was still more significant than the New Republic had thought — Karsh ' s fleet was the Yuuzhan Vong ' s sole extragalactic reserve . From that point forward , the Yuuzhan Vong could expect no further assistance from beyond the limits of the galaxy . Furthermore , the success of the combined New Republic — Hapan foray ensured further cooperation between the two governments , contributing to the later decision of the Hapans to joining the Galactic Alliance . Even so , the battle was not without its losses . The disabled gunship " Pulsar " was abandoned , and the damaged cruiser " Far Thunder " was destroyed by a swarm of rogue coralskippers not long after the fighting had concluded . Behind the scenes . The Second Battle of Obroa - skai appears in the 2003 novel " " by Walter Jon Williams . In an in - universe document in " The Essential Guide to Warfare " , published in 2012 , the Yuuzhan Vong are erroneously said to have sacrificed a spare worldship to give the New Republic the victory , but " Destiny ' s Way " proves this to be false ; the forces at Obroa - skai are , in the novel , purported by Supreme Overlord Shimrra to be a vital strategic reserve , one that would leave the Yuuzhan Vong Empire vulnerable if lost .