possessed themselves of Dacia and Moesia". Even so, the Germanic and Celtic kingdoms, particularly the Gothic tribes, slowly moved toward the Dacian borders, and within a generation were making assaults on the province. Ultimately, the Goths succeeded in dislodging the Romans and restoring the "independence" of Dacia following Emperor Aurelian's withdrawal, in 275. In AD 268–269, at Naissus, Claudius II (Gothicus Maximus) obtained a decisive victory over the Goths. Since at that time Romans were still occupying Roman Dacia it is assumed that the Goths didn't cross the Danube from the Roman province. The Goths who survived their defeat didn't even attempt to escape through Dacia, but through Thrace. At the boundaries of Roman Dacia, 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 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