Battle of Xagobah The Battle of Xagobah was a major battle during the Clone Wars which took place sixteen months after the Battle of Geonosis , in 21 BBY , and lasted on until the onset of the Outer Rim Sieges . It occurred concurrently with Boba Fett ' s assassination attempt on Techno Union Foreman Wat Tambor . Events . Prelude . After retreating from a Republic offensive in the Core and Colonies , the Confederacy of Independent Systems began marshaling the majority of its fleet at its strongholds in the Outer Rim Territories in an attempt to draw in the Republic . Xagobah was one of these fortress world s , serving as the retreat of Techno Union Foreman Wat Tambor and the location of his Mazariyan citadel . Eager to capture Tambor , the Republic sent a force led by Jedi Master Glynn - Beti to lay siege to Xagobah . Unbeknownst to the Republic , a high - ranking Senate official had placed bounties on the heads of leaders of the Separatists , and Wat Tambor had become the target of the young bounty hunter Boba Fett . The Republic positioned an " Acclamator " - class assault ship to coordinate the battle from high orbit , while Glynn - Beti and her Padawan Ulu Ulix led the ground assault and starfighter ace Anakin Skywalker provided air support . The battle . After an initial assault , legions of clone troopers , walkers , LAAT / is , and starfighters surrounded the fortress and bombarded it from dug - in positions , while a battle droid army marched from the nearby devastated city to break the siege . In an attempt to eliminate the Republic ' s air support , Wat Tambor programmed a drone ship to ram the assault ship in orbit . Anticipating such a move , Ulu Ulix took a swoop and raced toward the ramship , but he was shot down by enemy fire . Boba Fett intercepted the falling Ulu and saved the young Jedi ' s life , bringing him back to Glynn - Beti . As Boba Fett drew closer to the citadel walls , Tambor ' s forces staged a counterattack , and thousands of battle droids and droidekas streamed out of Mazariyan to meet the clone army . At this point , Anakin Skywalker led a squadron of Jedi interceptors in a strike against the fortress , managing to blow a large hole in the structure . A Hailfire droid fired a volley of missiles at Anakin ' s starfighter , but the experienced pilot was able to evade the missiles and cause them to impact the ramship , triggering its detonation . The energy pulse from the explosion temporarily scrambled the battle droids ' circuits , allowing Boba Fett to infiltrate the Mazariyan citadel through the hole carved by Republic fire . While the battle continued outside , Boba Fett confronted and attempted to assassinate Wat Tambor , but the Techno Union Foreman was able to escape thanks to the help of General Grievous , who had arrived on Xagobah with Confederate reinforcements . Despite being only 12 years old , the young bounty hunter managed to put up a fight , and narrowly escaped with his life . As Boba Fett left in " Slave I " he was attacked by Asajj Ventress . " Slave I " was severely damaged , but repaired by Anakin Skywalker on a nearby asteroid . After this departure , the Siege of Xagobah dragged on for several months , but eventually the Confederacy was forced to surrender the world to the Republic .