Around 335, Shapur II's armies attacked Armenia, as part of the Roman–Persian Wars. Shapur's Sasanian Empire sent Narses to invade Armenia, but the attack did not have success and Narses died. The "Consularia Constantinopolitana" and the "Chronicon Paschale" both say that on 25 July 335, it was Constantine's thirtieth anniversary festival as emperor (his ) at Constantinople. Eusebius of Caesarea gave a speech at the festival.