The Hyrol Preen Beta pacification culminated in the utter annihilation of the planet of Hyrol Preen Beta at the hands of the Galactic Empire. The spacer Johin recounted that the Empire responded with extreme force against the local populace because of alleged Rebel operations; the planet was thought to have served as a sanctuary for the Alliance to Restore the Republic. Unable to directly apprehend the Rebels, the Empire deployed the "DeathWhispers" storm commando squad, ZQ Infantry Support Units, and standard troops to obliterate the settlements on Hyrol Preen Beta, thereby precluding any future Rebel presence.