' Our long-standing listening outpost on the high peaks of Rhen Var is under Rebel attack.
The Rebel force was comprised of troopers, vanguard division soldiers, snipers, Wookiee smugglers, and pilots. The Imperials advanced against the Rebels, who had deployed at a tower below the station. The Imperial attack force-consisting of snowtroopers, Imperial Army pilots, scout troopers, shock troopers, and Phase Zero dark troopers-arrived and was ordered to seize the section of the outpost called the Keep. The Rebels captured the facility from the Imperial garrison stationed there and maintained control over it for a few days before the Empire launched a counterattack. The Rebel Alliance subsequently launched an assault to prevent the outpost from tracking them. In 0 BBY, early in the Galactic Civil War -a conflict between the Empire and the Rebel Alliance freedom fighters-the outpost was able to monitor Rebel fleet activity.
The Galactic Empire had long operated a listening outpost out of a derelict citadel on Rhen Var, an ice-covered Outer Rim world deeply entrenched in history surrounding the Galactic Republic, the precursor government to the Empire.