Tormentor/Legends
Tormentor was an Imperial-class Star Destroyer that was scheduled to meet a supply convoy (four BFF-1 bulk freighters of group Monru) at Udnil II during Imperial Operation: Clean Sweep. The supply operation came under attack by Rebel forces consisting of X-wings, Y-wings and A-wings as backup. At the time, the Tormentor was not carrying its standard complement of starfighters. Instead, it deployed TIE Avengers to intercept the attack.
Behind the scenes
While the occurrence of the space battle depicted in this mission, as well as the participants, is C-Canon, the outcome depends on the actions of the player and is therefore indeterminate. For lack of other canonical information it should be assumed that the battle had no lasting effect (such as the destruction of the station or a starship).