Upon Julian's death, the newly elected Emperor Jovian was forced into signing a humiliating treaty by which territorial and diplomatic concessions were given to the Sasanians.
[4] This army under Julian marched swiftly south-east along the Euphrates river on route to Ctesiphon, the enemy capital.
[5] The remainder of the Roman forces, with the aid of the King of Armenia Arshak II, was ordered to effect a junction with the emperor before the walls of Ctesiphon, marching east by way of Nisibis and then south along the Tigris.
[7] After a vain attempt to penetrate further east to Susa, Julian was forced to abandon his fleet and most of his provisions,[7] and was at length convinced that no option remained to him but a retreat.
[9] His death that night,[10] and the subsequent election by the troops of Jovian as his successor,[11] seemed to secure the end of the campaign.