The Styx system is a star system located within the extra-galactic L-Cluster. The system is the terminal egress of the L-Gate network that was unlocked by the Greater Terran Union in 2469. Through the L-Gates, Styx connects directly to every quadrant of the Milky Way, giving it massive strategic importance. This importance led to the formation of Battlegroup Styx to be on permanent assignment to the system. It also led to the system being the location for the largest battle in galactic history, the Battle of Styx.

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