11 BBY, September 17.
Galactic Empire Admiral Gillard-Perine led his fleet from Bilbrin Planet and began the offensive against Dorin Planet.
Ten years earlier, also at Dorin Planet, the Republic Fleet had been attacked by the Geth fleet and suffered a crushing defeat in the Battle of Dorin Planet. The Geth fleet had used warp travel to launch a direct surprise attack on Dorin Planet, which had still been far behind the front lines at the time, catching the Galactic Republic defenders completely off guard.
Not only that, the Geth had also landed on Dorin Planet's surface, carrying out one horrific massacre after another.
As a result, the inhabitants of Dorin Planet had been almost completely slaughtered by the Geth. The entire planet was occupied and transformed into factories. The remnants of the Galactic Republic fleet fled in panic, and it was in that battle that Gillard-Perine first began to distinguish himself. Through his outstanding command, he allowed the surviving Republic forces to escape that hell.
Dorin Planet had once been the homeworld of Jedi Master Ploo-Koon and his niece, Jedi Master Sha Koon. But now, the planet had long since been reduced to devastation. With Master Ploo-Koon killed by Darth Malthael on Rendili Planet, and Master Sha Koon vanishing without a trace after Order 66, Dorin Planet had gradually begun to be forgotten by the Milky Way Galaxy.
Now, ten years later, Gillard-Perine had become an Admiral of the Navy, and the fleet at Dorin Planet this time was dozens of times larger than it had been back then!
Gillard-Perine led the Northern Territory's main fleet forward. A vanguard of 150 Imperial-class Star Destroyers entered the Dorin system first and immediately encountered the Geth fleet. Fierce fighting erupted between the two sides.
The Geth fleet of today was likewise