 The Helvian Valerii, in fact, play a key role in securing Caesar's rear militarily against Vercingetorix, who sent forces to invade Helvian territory.In his 1861 history of the Vivarais, Abbé Rouchier conjectured that Caesar, seeing the strategic utility of Helvian territory on the border of the Roman province along a main route into central Gaul, cultivated the Valerii by redressing the punitive measures taken against them by Pompeius.Caesar mentions the land forfeiture in his "Bellum Civile", while discreetly omitting any actions taken by his loyal Helvian friends against Rome in the 70s.