Agricola Conquers Northern BritainAgricola was governor of the Roman Province of Britannia for 7 years from 77 to 84. The book describes the Roman war machine. It then argues that Vespasian decided in 71 to conquer the whole of the island of Britain, and substantially expanded the army and sent three of his best generals to complete the conquest. The opposing commanders and the order of battle of the Exercitus Britannia are analysed. The heart of the book is a year by year analysis of