This volume offers a major reinterpretation of Ammianus Marcellinus' Res Gestae, one of the main narrative sources for the political history of the later Roman Empire. Arguing for a re-examination of Ammianus' agenda and methods in depicting Julian, the last 'pagan' emperor, it re-analyses his narration of several key moments in Julian's reign. The book provides a better understanding of Ammianus' account of Julian, and of Julian's significance in the work of the historian as a whole. It provides further means to verify the credibility of individual sources and their application by the historian ... Ross's book gives a better understanding of the choice of the facts handed down, the way in which they are presented, and their evaluation by Ammianus, and is thus also important to the historian.