Ammianus Marcellinus
Ammianus Marcellinus once described himself, in Latin, as "miles quondam et graecus" - a former soldier and a Greek. That self-description holds something quietly remarkable. He was a Greek-speaking man from the eastern reaches of the Roman world, writing in Latin, about an empire he had served with a sword before he ever picked up a pen. His chronicle of Rome, known as the Res gestae, stands as the penultimate major historical account to survive from antiquity. Only Procopius, writing in the following century, follows him in that ancient line. Yet the first thirteen of Ammianus' thirty-one books have vanished entirely from the earth. What remains covers a single generation: the years 353 to 378, a period Ammianus lived through himself, often in mortal danger. Who was the soldier who became Rome's great chronicler? What did he see on those campaigns? What kind of historian did he choose to be, and why does that matter to us now?
Around 330, Ammianus was born in the East Mediterranean, probably in Syria or Phoenicia, into a noble family of Greek origin. He entered military service at an early age, joining the Praetorian Guard. His enrollment among the elite protectors domestici, the household guards closest to imperial power, tells scholars he was of at least middle-class birth, probably from a curial family. His first posting took him to Nisibis in Mesopotamia, where he served under Ursicinus, the governor and magister militum, or master of soldiers.
The relationship between Ammianus and Ursicinus was formative. He followed the general to Italy on an expedition against Silvanus, an officer who had proclaimed himself emperor in Gaul. Ursicinus ended the threat by having Silvanus assassinated. After that mission, Ursicinus helped install Julian as Caesar of Gaul, Spain, and Britain, and Ammianus likely met Julian for the first time while on his commander's staff during that posting.
In 359, Constantius sent Ursicinus back east to meet a Persian invasion led by King Shapur II. Ammianus went with him. The campaign placed Ursicinus under the command of Sabinianus, the Magister Peditum of the east. The two commanders did not get along. The friction between them left the border regiments of Mesopotamia and Osrhoene and the main field army poorly coordinated at a dangerous moment. Near Nisibis, Ammianus personally spotted a Persian patrol moving to capture Ursicinus and warned his commander in time.
Ursicinus sent Ammianus on a mission into Corduene, to Jovinianus, its semi-independent governor and a friend of the general. Ammianus located the Persian main body and reported his findings back to headquarters at Amida. What happened next nearly cost him his life.
Leaving Amida in the retinue of Ursicinus, Ammianus was part of a group tasked with demolishing bridges across the Euphrates. The Persian vanguard caught them by surprise: a night march designed to find the Romans unprepared. A protracted cavalry battle scattered the Roman force. Ursicinus escaped to Melitene. Ammianus made his way back to Amida on foot, traveling with a wounded comrade. The Persians then besieged Amida and eventually sacked the city. Ammianus barely escaped with his life.
When Constantius later dismissed Ursicinus from command, Ammianus appears to have stepped away from active service as well. Later scholarship has suggested he may have continued serving under Julian but chose not to record that period in his history. He accompanied Julian on campaigns against the Alamanni and against the Sassanids, and after Julian died he followed the retreat of the new emperor, Jovian, as far as Antioch.
In 372, Ammianus was living in Antioch when a man named Theodorus was identified through divination as the supposed future successor to the emperor Valens. Writing as an alleged eyewitness, Ammianus described how Theodorus and several others were tortured into confessing their deceit and were cruelly punished. The episode illustrates how close Ammianus stayed to the centers of imperial anxiety and repression, watching firsthand the machinery of power turn on those who threatened it.
His critical eye extended to religion without becoming a weapon of partisan conviction. Modern scholars generally class him as a pagan, but one who was tolerant of Christianity. He described the faith as a "plain and simple" religion demanding only what is just and mild. His condemnations of individual Christians were based on their conduct, not their beliefs. The Arian controversy and the fierce sectarian conflicts of his era struck him as unseemly, though he recognized that the growing entanglement of the church with imperial power made outright criticism dangerous territory. His most pointed remark on the subject cuts with precision: he observed that no wild beasts are so hostile to men as Christian sects are to one another. He reserved criticism for pagans too; he condemned Julian for excessive attachment to sacrifice and for the edict that effectively barred Christians from teaching.
Ammianus settled in Rome and began writing the Res gestae while living there during the 380s. He conceived the work as a continuation of the histories of Tacitus, picking up the narrative from the accession of Emperor Nerva in 96 and running it to the death of Valens at the Battle of Adrianople in 378. The full work ran to thirty-one books.
At section 22.16.12, Ammianus praised the Serapeum of Alexandria as the glory of the empire. Scholars have used that passage to date the completion of the work: since the Serapeum was destroyed in 391, the Res gestae was presumably finished before that year. The surviving eighteen books carry a weight those thirty-one were meant to share. The first thirteen books are gone. What remains covers 353 to 378, and those eighteen books form the foundation of modern understanding of fourth-century Rome.
His account of the earthquake and tsunami that struck Alexandria on the 21st of July 365 has attracted particular attention from modern researchers. His description accurately traces the characteristic sequence: earthquake, the retreat of the sea, and then the sudden return of a giant wave. That level of precision, from a historian writing of an event that devastated the eastern Mediterranean, stands as evidence of both his attentiveness and his sources.
The Res gestae survived antiquity by a narrow margin, and its textual transmission has been marked by damage, loss, and scholarly dispute. Almost every surviving copy of the text derives from a single ninth-century Carolingian manuscript known as Vatican lat. 1873, produced at Fulda from an earlier insular exemplar. The only independent witness to the text is a second ninth-century Frankish codex, the Fragmenta Marbugensia. That manuscript was taken apart during the fifteenth century to provide covers for account books. Only six of its leaves survive.
Before the Fragmenta Marbugensia was dismantled, the Abbot of Hersfeld lent it to Sigismund Gelenius, who used it in preparing the second Froben edition, known to scholars as G. The precise relationship between these two sources was disputed for centuries until 1936, when R. P. Robinson demonstrated that the Vatican manuscript was copied from the Frankish one. As the scholar L. D. Reynolds summarized, the Frankish codex is a fragment of the archetype, and signs of an even earlier insular pre-archetype are visible.
The printed history of the text began in 1474, when Georg Sachsel and Bartholomaeus Golsch printed the editio princeps in Rome. That edition broke off at the end of Book 26. A Bologna edition of 1517 compounded the errors of its predecessor, and the 1474 text was pirated for the first Froben edition of 1518. It was not until 1533 that Silvanus Otmar, working with an edition prepared by Mariangelus Accursius, put the last five books into print. The first modern critical edition came from C. U. Clark, published in Berlin between 1910 and 1913. English readers had to wait until 1609, when Philemon Holland produced the first translation; C. D. Yonge followed in 1862.
Edward Gibbon, who relied on Ammianus heavily for his own history of Rome's decline, called him "an accurate and faithful guide" who wrote about his own times without the prejudices that usually afflict a contemporary. Gibbon then turned and condemned him in the same breath, writing that "the coarse and undistinguishing pencil of Ammianus has delineated his bloody figures with tedious and disgusting accuracy." The contradiction captures something real: Ammianus was difficult to dismiss but not easy to admire simply.
Austrian historian Ernst Stein placed him in a lineage that spans centuries, calling him "the greatest literary genius that the world produced between Tacitus and Dante." The scholar Kimberly Kagan offered a more targeted critique: Ammianus's battle narratives foreground the experience of ordinary soldiers but lose the strategic picture in the process. That choice, Kagan argued, makes it hard for readers to understand why the battles came out as they did.
Scholars have also noted the tension between his declared intention toward impartiality and the strong moral and religious prejudices visible throughout his work. His early biographers criticized him for lacking literary merit. Later analysis found the opposite: he was quite skilled in rhetoric, and that skill has itself raised questions about how much the Res gestae shapes its evidence toward a particular view. Substantial fragments of a Greek summary covering Books I-XXV have been identified in several Byzantine histories, offering a partial window onto the books that no longer exist in full.
Continue Browsing
Common questions
Who was Ammianus Marcellinus and when did he live?
Ammianus Marcellinus was a Greek-born Roman soldier and historian who lived from around 330 to somewhere between 392 and 400. He served in the armies of emperors Constantius II and Julian before settling in Rome and writing the Res gestae, a history of Rome from 96 to 378.
What did Ammianus Marcellinus write and how much of it survives?
Ammianus wrote the Res gestae, originally thirty-one books covering Roman history from the accession of Emperor Nerva in 96 to the death of Valens at the Battle of Adrianople in 378. The first thirteen books have been lost; the surviving eighteen books cover the years 353 to 378.
Where was Ammianus Marcellinus born and what was his background?
Ammianus was born around 330 in the East Mediterranean, possibly in Syria or Phoenicia, into a noble family of Greek origin. His native language was Greek, but he also knew Latin. He described himself as "miles quondam et graecus" - a former soldier and a Greek.
What military campaigns did Ammianus Marcellinus participate in?
Ammianus served under Ursicinus in Mesopotamia and accompanied him on campaigns in the east against the Persian forces of King Shapur II in 359. He also served in Gaul under Julian, participated in campaigns against the Alamanni and the Sassanids, and narrowly escaped the Persian sack of Amida.
What is the manuscript history of the Res gestae by Ammianus Marcellinus?
Almost all surviving copies of the Res gestae trace back to a single ninth-century Carolingian manuscript, Vatican lat. 1873, made at Fulda. The only independent source is the Fragmenta Marbugensia, a second ninth-century codex dismantled in the fifteenth century for bookbinding, of which only six leaves survive. In 1936 R. P. Robinson demonstrated that the Vatican manuscript was copied from the Frankish one.
How did Edward Gibbon assess Ammianus Marcellinus as a historian?
Gibbon called Ammianus "an accurate and faithful guide" who wrote about his own times without the usual prejudices of a contemporary. He also criticized him, writing that "the coarse and undistinguishing pencil of Ammianus has delineated his bloody figures with tedious and disgusting accuracy."
All sources
3 references cited across the entry
- 1BookThe Cambridge History of Classical Literature: Volume 2, Latin Literature, Part 1, The Early RepublicE. J. Kenney — Cambridge University Press — 1983-07-14
- 2BookHandbook to Life in Ancient RomeLesley Adkins et al. — OUP USA — 1998