Mar 5 Roman Emperor Julian moves from Antioch with an army of 90,000 to attack the Sassanid Empire, in a campaign that brings about his own death
May 29 Roman Emperor Julian defeats the Sassanid army in the Battle of Ctesiphon, under the walls of the Sassanid capital, but is unable to take the city
Jun 26 Roman Emperor Julian is killed during retreat from the Sassanid Empire. General Jovian is proclaimed Emperor by troops on the battlefield.