The Battle of Narasara in October 343 was one of the first clashes of the Roman-Persian wars under Emperor Constantius II. Sasanian troops under Narses, brother of the Sasanian king of kings (shahanshah) Shapur II, invaded Roman Mesopotamia and took the city of Amida. In the subsequent engagement, Narses was defeated and killed by a local Roman force, and the Romans recaptured the lost territories, including the city of Nineveh, whose inhabitants were deported to Roman Thrace.
Background In 334, Tiridates III of Armenia, allied with Rome, was captured by Shapur II and taken to Persia, forcing the Armenians to invoke the help of Emperor Constantine.. Tiridates' conversion to Christianity had cemented Armenia as a pro-Roman state. He may also have been poisoned; see p. 50. Shapur, realizing Armenia's weakness, decided to annex the region, directly threatening the nearby province of Roman Mesopotamia.
In 335, Emperor Constantine sent his son Constantius in the wast as preparation for a campaign against the Sasanian Empire. Constantius, with the help of Ablabius, recruited and drafted new soldiers, implemented training and drills, expanded the cavalry, and stockpiled supplies.; ; . These preparations, however, did not go unnoticed by the Persians.
Battle Narrative Narses, the younger brother of Shapur II, was ordered to invade Roman Mesopotamia. With a small force, he advanced deep into the province, capturing Amida (Diyarbakır) and subsequently winning several cavalry engagements before being decisively defeated by a Roman force at a place called Narasara.; ; ; . Amida's walls had been fortified by Constantius a few years before the battle; see . According to Festus, Narses was killed in the battle. This identification is supported by modern scholarship, which distinguishes him from Narses, son of Shapur, who died at the Battle of Singara. Following this victory, the Romans recaptured Amida and also captured Nineveh. According to Libanius, the population of the latter city was deported to Thrace.; . Libanius does not name the city, but Burgess and Malosse identify it as Nineveh. According to , this unnamed city was inhabited by Jews allied to Persia.
Date and triumph Traditionally, the battle has been dated to 337. Arce, following an analysis of an inscription from Troesmis (ILS 724), proposes a date of 335. On this reconstruction, Constantius II would have been present on the eastern frontier and taken part in the battle. Portmann, based on Theophanes the Confessor's account, instead, dates the battle to 341. Burgess, however, rejects this chronology, arguing that Theophanes' Anni mundi can be used only as a subsidiary chronology to the regnal years. He instead dates the battle to October 343, a date also accepted by Malosse.; . On the 343 date, Constantius II would not have been present at the eastern frontier and therefore could not have taken part in the battle. Therefore, Constantius was at Antioch when the battle took place, and on 31 January 344 he held a triumph, which was later commemorated with four days of ludi (public games) on 26 and 28 to 31 January to mark the event.
Localization and identification The location of Narasara is disputed among modern historians, and several identifications have been proposed. One possibility places it somewhere in the vicinity of Nineveh.; . Other historians identify it with Nararra (Nehar Ḥarré), approximately 13 Roman miles east of Amida, on the road towards Tigranocerta. Another possibility is that the battle took place in the vicinity of Singara (Sinjar), with the eponym "Narasara" deriving from Narses, the brother of Shapur II.; . If this identification is accepted, the battle most likely took place at the foot of the Sinjar mountain range, along the Nahr Ghîrân river.; .
A few historians have proposed that Narasara formed part of the Battle of Singara, which they regard as a series of engagements rather than a single battle. Several historians, however, reject this interpretation, noting that Festus, in his account of the battles fought by Constantius against the Persians, distinguishes between these two battles.; ; ; .
See also Siege of Nisibis (338) Battle of Singara (344) Siege of Nisibis (350) Siege of Singara (360)
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