Dylar
The Dylarian system is a core Terran system in the Koprulu Sector. The colony on Dylar IV formed one of the key worlds of the Terran Confederacy, housing the base of operations for Omega Squadron. The colony was attacked by the Zerg and presumed infested in the initial stages of their invasion of the Sector. The status of the colony after the end of the Brood War is not known.
The Dylarian system also housed a large orbital shipyard facility. These shipyards were vital to the Confederate fleet and later became the property of the Terran Dominion. It is at these shipyards that Jim Raynor's troops managed to commandeer a small fleet of combat vessels for his new rebel organisation after the fall of Tarsonis, even managing to hijack Arcturus Mengsk's flagship, the Hyperion, from the command of General Duke. During the early stages of United Earth Directorate's invasion of the Sector the shipyards were raided again, this time by UED forces to capture a large number of Dominion battlecruisers for use in their campaign. General Duke attempted to defend the shipyards in the new flagship Norad III, but his forces met defeat at the superior firepower of the UED fleet.
Read more about this topic: Koprulu Sector