Three years after his accession, war erupted between the Sasanians and Romans once again. In the spring of 297, Narseh's forces inflicted a heavy defeat on the forces of Galerius. The following year, however, Narseh was to suffer a heavy defeat at Satala; his wives, children, and many Iranian nobles were taken as prisoners of war. Due to this ignominious defeat, Narseh was forced to accept a peace treaty prescribed by the Romans, ceding them several areas at the Sasanian-Roman border.