The pacification of Hyrol Preen Beta was an event that resulted in the destruction of the planet Hyrol Preen Beta by the Galactic Empire. According to the spacer Johin, the Empire came down hard on the natives due to suspected Rebel activity, as the planet was rumored to have been a base for the Alliance to Restore the Republic. When it could not catch them outright, a combination of the "DeathWhispers" storm commando unit, their ZQ Infantry Support Units, and regular line troops wiped out Hyrol Preen Beta' settlements in order to prevent the Rebels from returning.
- Cynabar's Fantastic Technology: Droids
- The Complete Star Wars Encyclopedia, Vol. II