The Bastion, a substantial strategic installation, was constructed by the Galactic Republic on the world of Corellia. It was regarded as an unmatched fortress, serving for centuries as the central hub for Republic Military strategy and analysis. Its structure included expansive underground data repositories, holding details on every strategic asset at the Republic's disposal. This encompassed both formal and informal resources, along with a vast collection of data concerning every species, government, and organization within the known galaxy.
Initially, the Bastion's data repositories were used to bolster detailed simulated war game exercises. The military's highest-ranking officers sought to utilize this documented information in innovative ways to prepare the Republic for any potential future dangers. This was the established practice leading up to the Great Galactic War. However, none of these simulations foresaw the ingenuity and strategy behind the Sith Emperor's sweeping invasion strategy during the Sith Empire's resurgence.
During the era of the Cold War, the Sith launched an overt invasion against Corellia itself, succeeding after members of the Corellian government handed control of the planet over to the Empire. These events enabled General Arkos Rakton to seize command of the Bastion, aided by Lieutenant Pierce and his special operations team. Nevertheless, General Elin Garza spearheaded the effort, with assistance from Havoc Squad, to reclaim the facility.