Our fullest account, indeed the only account of any length, of the Roman invasion of Britain in a.d. 43 appears in the Roman History of Cassius Dio, composed from earlier sources in the third century. Not surprisingly, this is taken as providing a narrative framework for the events of the invasion. However, Dio's account omits or is unclear about even major matters of importance: in recent years, for example, there has been a debate over whether the army commanded by Aulus Plautius actually landed in Kent or in Sussex. A brief notice of the invasion appears in the Breviarium of the fourth-century writer Eutropius. The significance of what Eutropius wrote is examined below and its importance for the strategy of the invasion is assessed.