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Therbon was an individual who served the Galactic Empire shortly after the Declaration of a New Order. Therbon was made Grand Moff of the Maldrood Oversector and commander of the Twelfth Army of the Republic.[2]

In 2 ABY, the aged Grand Moff Therbon grew frustrated with his inability to retake Mon Calamari.[1] Since the Empire had been unwilling to gather a fleet large enough to assault the Mon Calamari homeworld, he deployed an assault fleet comprised of Star Destroyers to bombard Ruisto.[3] During the attack, Grand Moff Therbon ordered a sustained orbital bombardment that wiped out all life on Ruisto.[1]

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