Publius Crassus
In Book 3 of the "Bellum Gallicum", Caesar says that the Andes provided winterquarters for Publius Crassus after his mission into Armorica, which brought several Gallic polities into relations with Rome. Over the winter of 57–56 BC, the Romans built a fleet on the Loire under the command of Decimus Brutus, presumably in preparation for an invasion of Britannia, but which was instead called into action against the Veneti when Armorican objections were raised.