Pescennius Niger
During the Year of the Five Emperors the Syrian Legions, including the III "Gallica", supported Pescennius Niger. However, Septimius Severus emerged as the victor. Septimius Severus would campaign against the Parthian Empire; one of the legions that fought in this campaign was the III "Gallica." During the reign of Roman Emperor Caracalla, the Legion left an inscription amongst the Commemorative stelae of Nahr el-Kalb.