Certainly, the Sassanids had not been cowed by the previous battles with Rome and in 253 AD the Sassanids under Shapur I penetrated deeply into Roman territory several times, defeating a Roman force at the Battle of Barbalissos and conquering and plundering Antiochia in 252 AD following the Siege of Antiochia. The Romans recovered Antioch by 253 AD, and Emperor Valerian gathered an army and marched eastward to the Sassanid borders. In 260 AD at the Battle of Edessa the Sassanids defeated the Roman army and captured the Roman Emperor Valerian.