After Gnaeus Domitius Corbulo had been appointed to campaign against the Parthians over the control of Armenia, he withdrew III "Gallica" along with Legio VI Ferrata to form the core of his army. The campaign lasted from 58-68 AD. Corbulo's successes triggered the emperor Nero's resentment and eventually the general was forced to commit suicide. In 68 AD, III "Gallica" was transferred to the province of Moesia on the Danube.