Battle of Foerost ( Clone Wars ) The Battle of Foerost took place in 20 . 1 BBY , the second year of the Clone Wars . Since the war ' s outset , the Galactic Republic had blockaded the Techno Union ' s Foerost Shipyards , hoping to prevent them from supplying starships to the Confederacy of Independent Systems . That changed when the beleaguered Techno Union engineers completed work on a new warship : the Bulwark Mark I . Commanded by Admiral Dua Ningo , an entire armada of " Bulwark " - class battleships , designated as the Bulwark Fleet , breached Republic Captain Jan Dodonna ' s blockade of Foerost . The Bulwark Fleet ' s ensuing campaign against the Core Worlds forced the Republic to press into service a fleet of its own prototype cruiser , the " Victory I " - class Star Destroyer , to hunt down Ningo ' s Bulwarks . Prelude . Centuries prior to the Clone Wars , the Techno Union purchased the Foerost Shipyards , a starship construction facility orbiting the Core World of Foerost . Techno Union starship engineers soon developed a new design : the Bulwark Mark I , a kilometer - long battlecruiser bristling with weaponry and heavy armor . Following the outbreak of the Clone Wars in 22 BBY , the Republic Navy blockaded Foerost , hoping to cut off the Techno Union shipyards from Separatist supply lines and consequently send the facility into atrophy . The standoff , known as the Foerost Siege , continued for nearly two full years until the Techno Union designers decided to unveil their new creation . The battle . In 20 . 1 BBY ( 15 : 4 ) , twenty - three months into the war , the Techno Union engineers completed their work on the Bulwark Fleet , an armada of Bulwark Mark Is . Admiral Dua Ningo of the Confederate Navy assumed command of the Bulwark Fleet , then blasted out of the Foerost Shipyards and broke through the Republic blockade , which was being overseen by Captain Jan Dodonna . Witnesses were left appalled by the Confederacy ' s unthinkable new warships . Aftermath . With the Bulwarks liberated from Foerost , Ningo received orders to capture the planet Coruscant , and his fleet crippled Republic outposts throughout Sector Zero en route to the galactic capital . To counter the Bulwarks , the Republic deployed its newest creation : the " Victory I " - class Star Destroyer , designed by Republic engineer Walex Blissex . The product of the Kuat / Rendili Victor Initiative Project , the " Victory I " - class Star Destroyer was launched almost six months ahead of schedule , with multiple " Victory I " - class cruisers forming the so - called Victory Fleet under the command of Republic Navy Captains Dodonna and Terrinald Screed . The two Republic officers took their battle group of Star Destroyer s on what proved to be a memorable shakedown cruise , clashing with the Bulwark Fleet at the Core Worlds of Ixtlar , Alsakan , and Basilisk . Following the conclusion of the crisis at the Battle of Anaxes , the Republic eventually recaptured Foerost from the Techno Union . The historic Battle of Foerost was among the events that prominent Galactic Alliance historian Voren Na ' al documented in his chronicle of galactic history in 36 ABY . Behind the scenes . The Battle of Foerost was created by author Daniel Wallace for his 2005 compendium " The New Essential Chronology " , which itself was framed as an in - universe narrative authored by Voren Na ' al . Wallace ' s setup of the battle , as well as the ensuing campaign between the Victory and Bulwark Fleets , took inspiration from material developed for earlier " Star Wars " works , including the 1998 video game " " and a 2002 news bulletin on the HoloNet News website . The battle has since been referenced in various publications by other authors , including " The Complete Star Wars Encyclopedia " ; " The Essential Atlas " , which provided an official name for the battle ; and " The Essential Guide to Warfare " .