 The Emperor Valerian (253–260) marched against him and by 257 Valerian had recovered Antioch and returned the province of Syria to Roman control.The speedy retreat of Shapur's troops caused Valerian to pursue the Persians to Edessa, but they were defeated by the Persians, and Valerian, along with the Roman army that was left, was captured by Shapur and sent away into Pars.Shapur then advanced into Asia Minor and managed to capture Caesarea, deporting 400,000 of its citizens to the southern Sasanian provinces.