In 332, Constantine helped the Sarmatians to settle on the north banks of the Danube to defend against the Goths' attacks and thereby enforce the Roman border. Around 100,000 Goths were reportedly killed in battle, and Aoric, son of the Thervingian king Ariaric, was captured. Eusebius, an historian who wrote in Greek in the third century, wrote that in 334, Constantine evacuated approximately 300,000 Sarmatians from the north bank of the Danube after a revolt of the Sarmatians' slaves. From 335 to 336, Constantine, continuing his Danube campaign, defeated many Gothic tribes.