Julian's Persian expedition

Julian's Persian expedition
Part of the Roman–Persian Wars

Julian getting trampled by Shapur II.
DateMarch–July 363 AD
Location
Mesopotamia, Western Iran and Armenia
Result Sasanian victory[1][2]
Territorial
changes
Sasanian annexation of five regions and fifteen major fortresses from the Roman Empire in addition to the consequent annexation of Armenia.[3][4]
Belligerents
Roman Empire
Armenia
Sasanian Empire
Arab allies
Commanders and leaders
Emperor Julian 
Emperor Jovian
Arshak II
Hormizd
Arintheus
Victor (WIA)
Dagalaifus
Nevitta
Lucillianus
Procopius
Sebastianus
Shapur II
Ardashir II
Pigranes
Surena
Merena 
Nohodares 
Narseus
Podosaces
Mamersides
Strength

120,000 men

  • 95,000 Romans[5]
  • 25,000 Armenians[6]
1,150 ships
Unknown, but probably fewer[7]
Casualties and losses
Heavy Moderate[8]
Map of Julian's unsuccessful campaign in 363

Julian's Persian expedition began in March 363 AD and was the final military campaign of the Roman emperor Julian. The Romans fought against the Sasanian Empire, ruled at the time by Shapur II.

Aiming to capture the Sasanians' winter capital of Ctesiphon, Julian assembled a large army. In order to mislead the opponent and to carry out a pincer attack, he sent a detachment to join with his ally Arshak II of Arsacid Armenia to take the Tigris route from the north. Meanwhile, his main army and a large fleet, facing little opposition, advanced rapidly down the Euphrates, destroying several well-fortified cities along the way. The ships then reached the walls of Ctesiphon, where a large Sasanian force had assembled in its defense.

The Romans won a victory outside the city, but the northern army failed to arrive, and the fortified capital seemed impregnable. Due to these complications, Julian did not attempt to besiege the city, instead burning the Roman fleet of supplies and leading a march into Persia's interior. Shapur II's army, however, took lengths to avoid a full-scale battle and used a scorched earth strategy; as a result, Julian's army soon faced supply problems and had to retreat to the north. Shapur II's army pursued the retreating Romans, ceaselessly harassing the retreat through skirmishes. Julian died of wounds from one of these skirmishes and his successor, Jovian, agreed to surrender under unfavorable terms in order to save the remnants of his demoralized and exhausted army from annihilation.

The Treaty of 363 transferred multiple regions and frontier fortresses, including Nisibis and Singara. In addition to territorial concessions, Rome renounced its alliance with Armenia, giving Shapur II the opportunity to invade and annex it.

  1. ^ Beate Dignas & Engelbert Winter, "Rome & Persia in Late Antiquity; Neighbours & Rivals" (Cambridge University Press, English edition, 2007), p131.
  2. ^ Potter, David S., "The Roman Empire at Bay, AD 180–395", Routledge, First Edition (Taylor & Francis Group, 2004), p520 & p527
  3. ^ Ammianus Marcellinus,xxv.7.9–14, ed. W. Seyfarth (Leipzig 1970-8; repr.1999)
  4. ^ "Welcome to Encyclopaedia Iranica".
  5. ^ R. Ernest Dupuy and Trevor N. Dupuy, The Harper Encyclopedia of Military History (HarperCollins, 1993), 168.
  6. ^ R. Ernest Dupuy and Trevor N. Dupuy, The Harper Encyclopedia of Military History, p168.
  7. ^ Ghafouri, Ali. "Tarikh-e Janghay-e Iran; Az Madha ta be Emrouz", Entesharat Etela'at 1388, ISBN 964-423-738-2, p176.
  8. ^ Ghafouri, Ali. "Tarikh-e Janghay-e Iran; Az Madha ta be Emrouz", The History of Persia's Wars; From the Medes to the Present", Entesharat Etela'at 1388, p176.