In the year 2 BBY, a conflict unfolded within a star system situated in the expanse of Sector 56. This particular engagement pitted rebellious factions, engaged in assaults on commercial vessels within the sector, against the 7th Fleet Imperial I-class Star Destroyer known as the Chimaera. The Chimaera was under the command of Grand Admiral Mitth'raw'nuruodo, also known as "Thrawn", who had just secured a strategic triumph for the Empire at the Battle of Atollon.
The Sector 56 skirmish concluded with an agreement that eliminated the danger to maritime transport and effectively placed the solar system under the dominion of the Galactic Empire. After this confrontation, Thrawn communicated his achievement to Emperor Palpatine at the Imperial Palace residing on Coruscant.