In the year 0 ABY, the Galactic Empire and the Alliance to Restore the Republic clashed in the Battle of Sarapin, a struggle for dominance over Sarapin's essential energy-gathering capabilities.
Rebel forces had seized control of several energy collection stations on Sarapin in the weeks leading up to the battle. Imperial authorities noticed a decline in energy output but received no response from the stations. The Empire finally responded after Grand General Malcor Brashin obtained concrete evidence of a Rebel takeover during a raid targeting a Rebel computer station located on Ruul.
Brashin swiftly deployed to Sarapin alongside Commander Brenn Tantor, his protégé. Tantor spearheaded the Imperial assault across Sarapin's volcanic terrain. After establishing a foothold and repelling an initial Rebel assault, Tantor's forces rapidly captured a nearby energy collector. However, the collector ceased functioning upon the Rebels' removal. Brenn was compelled to dispatch his brother Dellis, a proficient slicer, to bypass the Rebel security protocols and reactivate the facility. This same procedure was necessary for the remaining four collectors in the vicinity.
Once Tantor had secured all the collectors and eliminated the Rebel outposts in the area, disaster struck unexpectedly. The Rebels had also seized a nearby drilling platform, but they had subsequently lost control of it. The drill was overheating, causing seismic activity, which resulted in a volcanic eruption that destroyed one of the collectors Tantor had reclaimed.
Upon learning of the impending catastrophe, Brenn initially considered destroying the drill. However, Dellis persuaded him that he could infiltrate the drill's systems and shut it down, thus preserving the Empire's investment, provided Brenn could break through the Alliance defenses to get him there. Brenn complied, retaking the drill and deploying Dellis to deactivate it before groundquakes obliterated Sarapin's crucial energy collectors. He then proceeded to bombard the last Rebel stronghold on Sarapin, effectively eliminating the Rebel presence from the planet.
Following the battle, Brashin promoted Brenn Tantor to Major after conveying the news of the Death Star's destruction at the hands of the Rebels.