Under the dominion of the Galactic Empire, the planet Ruul housed numerous computer installations. These installations were purposed for the safekeeping and transmission of immense quantities of data. The Rebel Alliance seized the central computer complex, which resided within a canyon scarred by strip-mining operations, before the pivotal Battle of Yavin.
The Alliance used this captured location to relay data. This practice, however, proved to be a major weakness when Captain Brenn Tantor successfully recaptured the complex. Although the final assault damaged the complex's transmission antenna, Tantor, aided by his brother Dellis, managed to connect a chain of remote relay beacons to a nearby broadcast facility. From this facility, records of the Rebel transmissions were sent to the Star Destroyer Inquisitor in orbit. Aboard the Inquisitor, Grand General Malcor Brashin scrutinized the intercepted data and discovered the Rebels' clandestine seizure of energy collection facilities located on Sarapin.