Klemark served as the planet [Altair-9]'s capital city. In the course of the Galactic War fought between the Galactic Republic and the reconstituted Sith Empire, Republic Army General Vander conducted a ten-month siege on Klemark with the aim of liberating both the city and the planet from Imperial occupation. A Special Forces team named Eclipse Squad managed to get inside the city, taking down the defense systems, which then allowed the Republic forces to seize control of the city. Tragically, Eclipse Squad subsequently suffered a mental breakdown, resulting in the deaths of two hundred soldiers at Fort Klemark and the fort's ultimate destruction.