As part of the Outer Rim Imperial Fleet, Scourge Squadron came under the command of Grand Moff Ardus Kaine when he was promoted to take over Oversector Outer as a replacement to Grand Moff Wilhuff Tarkin. Scourge Squadron's primary mission was to hunt down Rebel activity in the Outer Rim Territories.
Later on, when Grand Moff Kaine turned warlord, he ordered Scourge Squadron to regroup in the New Territories. The fleet eventually served as the primary military muscle behind his Pentastar Alignment. The disappareance of Scourge Squadron in Oversector Outer contributed to the quick progression of the New Republic fleet after the Battle of Endor.