An active fleet of the Imperial Navy from the Galactic Empire took part in the Galactic Civil War, engaging in a battle near the Hosnian system's edge. This armada faced off against Rebel Alliance starships, including the MC75 Star Cruisers Accordance and Temperance, as it tried to initiate a surprise attack on the Core Worlds, coinciding with the time of the Battle of Endor. Although the Imperial force successfully eliminated the Accordance, it ultimately suffered defeat.