Battle of Kamino The Battle of Kamino was fought during the Clone Wars between the Jedi - led Grand Army of the Galactic Republic and the Droid Army of the Confederacy of Independent Systems . The Separatists launched the battle as one of their key campaigns during the war , hoping to capture Kamino and eliminate the cloning facilities in Tipoca City , thus depriving the Republic from creating more clone trooper s for their army . The Separatists , led by General Grievous and Asajj Ventress , were repelled by the Republic . Prelude . The Confederacy of Independent Systems had attempted an assault on Kamino earlier in the Clone Wars . However the attempt was stopped by the destruction of Rishi Station The following year Jedi Generals Anakin Skywalker and Obi - Wan Kenobi intercepted a transmission between Confederate General Grievous and assassin Asajj Ventress . They were planing an attack on Kamino . Thus , Skywalker , Obi - Wan , Commander Cody , Captain Rex and the trooper s of the 501st Legion were then sent to reinforce the blockade and General Shaak Ti ' s forces at the cloning facilities in Tipoca City . During this time , Ventress and her forces were hiding in Kamino ' s ocean s aboard " Trident " - class assault ships . There they awaited Grievous ' s arrival . The battle . Space distraction . When Grievous ' s fleet approached Kamino , the blockade under Admiral Wullf Yularen held the line against the Confederate fleet . Skywalker and Broadside then led the fighter squadron s against the fleet . Grievous sacrificed his larger transport s to protect his command ship . When debris from Grievous ' s fleet fell into the ocean , Ventress ordered her aqua droid s to assemble the assault crafts . However , General Kenobi suspected that debris was a clue . So , Kenobi took a Kamino sub down into the ocean to investigate . There , he discovered the aqua droid s assembling the assault crafts . Kenobi was then attacked by four of the aqua droids . He was then forced to abandon the submarine . Kenobi was then saved by a Aiwha . Assault on Tipoca City . The " Trident " assault ships then came out of the ocean and attacked Tipoca City . The aqua droids under Ventress then led the attack against the clone trooper s under Commander Colt and his fellow ARC Trooper Havoc . General Grievous then landed with his battle droid s . After killing Colt , Ventress and Grievous discuss their plans . While Grievous would attack the clone barracks , Ventress would secure a sample of the clones ' DNA . During this time , troop ers Fives and Echo were acting as sniper s . They were then given grenade s by 99 after Havoc was killed . They then found a group of Clone cadet s and took them to the barracks . Once there , they were joined by Captain Rex and Commander Cody . Together , they prepared to fight Grievous ' s forces . When battle droids were about to enter the barracks , Cody , Rex and the others were able to attack them . Grievous was then confronted by Kenobi and the two dueled . They fought until they got to a platform where a " Trident " assault ship destroyed the platform . Grievous thought Kenobi had fallen to his death , but was actually saved once again by an Aiwha . Ventress then entered the DNA room and retrieved a DNA sample . However , she was then confronted by Skywalker . The two then fought until Ventress lost the sample and was surrounded by clone troopers . As Skywalker was about to let his troopers execute Ventress , Grievous came in a flight pod . Ventress was then able to board the Pod and retreated . During this time , Rex , Cody , their troops and the clone cadet s were able to destroy the battle droids . However , 99 was killed in the cross fire . Several ARF troopers then destroyed the last " Trident " assault ship . Aftermath . For their actions during the battle , Echo and Fives were then promoted to ARC troopers .