The Bastion, a massive strategic installation, was established by the Galactic Republic on the world of Corellia. It was regarded as an unparalleled stronghold and functioned for centuries as the central hub for Republic Military strategic planning and analysis. It housed extensive underground data repositories, containing intelligence on every strategic asset available to the Republic. This included both official and clandestine resources, along with a comprehensive collection of information about every species, government, and organization throughout the known galaxy.
Initially, the Bastion's data repositories were utilized to facilitate intricate simulated war game scenarios. The military's highest-ranking officers sought to leverage this documented information in innovative ways to prepare the Republic for any potential future threats. This was the practice in the era preceding the Great Galactic War. Nevertheless, none of these simulations foresaw the ingenuity and strategic prowess of the Sith Emperor's sweeping invasion strategy during the Sith Empire's resurgence.
During the Cold War, the Sith launched a full-scale invasion of Corellia itself after elements within the Corellian government ceded control of the planet to the Empire. This sequence of events enabled General Arkos Rakton to seize the Bastion, aided by Lieutenant Pierce and his covert operations team. However, General Elin Garza spearheaded the effort to reclaim the facility, supported by Havoc Squad.