Ammianus Marcellinus (occasionally anglicised as Ammian) (born , died 400) was a Roman soldier and historian who wrote the penultimate major historical account surviving from antiquity (preceding Procopius). His work, known as the Res Gestae, chronicled in Latin the history of Rome from the accession of the Emperor Nerva in 96 to the death of Valens at the Battle of Adrianople in 378, although only the sections covering the period 353 to 378 survive. Biography Ammianus was born in the East Mediterranean, possibly in Syria or Phoenicia, around 330. His native language is unknown but he likely knew Greek as well as Latin. The surviving books of his history cover the years 353 to 378. Ammianus served as an officer in the army of the emperors Constantius II and Julian. He served in Gaul (Julian) and in the east (twice for Constantius, once under Julian). He professes to have been "a former soldier and a Greek" (miles quondam et graecus), and his enrollment among the elite protectores domestici (household guards) shows that he was of middle class or higher birth. Consensus is that Ammianus probably came from a curial family, but it is also possible that he was the son of a comes Orientis of the same family name. He entered the army at an early age, when Constantius II was emperor of the East, and was sent to serve under Ursicinus, governor of Nisibis in Mesopotamia, and magister militum. Ammianus campaigned in the East twice under Ursicinus. He travelled with Ursicinus to Italy when Ursicinus was called on by Constantius to begin an expedition against Silvanus. Silvanus had been forced by the allegedly false accusations of his enemies into proclaiming himself emperor in Gaul. Ursicinus had one of his men assassinate Silvanus, restoring Gaul to Constantius. He then stayed in Gaul to help install Julian as Caesar of Gaul, Spain and Britain. Ammianus probably met Julian for the first time while serving on Ursicinus' staff in Gaul. In 359 Constantius sent Ursicinus back to the east to help in the defence against a Persian invasion led by king Shapur II himself. Ammianus returned with his commander to the East and again served Ursicinus as a staff officer. Ursicinus, although he was the more experienced commander, was placed under the command of Sabinianus, the Magister Peditum of the east. The two did not get along, resulting in a lack of