Carpi (Free Dacians) were still strong enough to sustain five battles in eight years against the Romans from AD 301–308. Roman Dacia was left in AD 275 by the Romans, to the Carpi again, and not to the Goths. There were still Dacians in AD 336, against whom Constantine the Great fought. The province was abandoned by Roman troops, and, according to the Breviarium historiae Romanae by Eutropius, Roman citizens "from the towns and lands of Dacia" were resettled to the interior of Moesia. Under Diocletian, c. AD 296, in order to defend the Roman border, fortifications were erected by the Romans on both banks of the Danube. Constantinian reconquest of Dacia In 328 the emperor Constantine the Great inaugurated the Constantine's Bridge (Danube) at Sucidava, (today Celei in Romania) in hopes of reconquering Dacia, a province that had been abandoned under Aurelian. In the late winter of 332, Constantine campaigned with the Sarmatians against the Goths. The weather and lack of food cost the Goths dearly: reportedly, nearly one hundred thousand died before they submitted to Rome. In celebration of this victory Constantine took the title Gothicus Maximus and claimed the subjugated territory as the new province of Gothia. In 334, after Sarmatian commoners had overthrown their leaders, Constantine led a campaign against the tribe. He won a victory in the war and extended his control over the region, as remains of camps and fortifications in the region indicate. Constantine resettled some Sarmatian exiles as farmers in Illyrian and Roman districts, and conscripted the rest into the army. The new frontier in Dacia was along the Brazda lui Novac line supported by Castra of Hinova, Rusidava and Castra of Pietroasele. The limes passed to the north of Castra of Tirighina-Bărboși and ended at Sasyk Lagoon near the Dniester River. Constantine took the title Dacicus maximus in 336. Some Roman territories north of the Danube resisted until Justinian. Victohali, Taifals, and Thervingians are tribes mentioned for inhabiting Dacia in 350, after the Romans left. Archeological evidence suggests that Gepids were disputing Transylvania with Taifals and Tervingians. Taifals, once independent from Gothia became federati of the Romans, from whom they obtained the right to settle Oltenia. In 376 the region was conquered by Huns, who kept it until the death of Attila in 453. The Gepid tribe, ruled by Ardaric, used it as their base, until in 566 it was destroyed