The Noviodunum fortress had been rebuilt during…
369 CE
The Noviodunum fortress had been rebuilt during the rule of Constantine I (306-337) as part of a bigger project of restoring the Empire's borders along the Lower Danube.
In 369, Valens, using a boat bridge, crosses again from Noviodunum (Isaccea) and attacks the northeasterly Gothic tribe of Greuthungi before facing Athanaric's Tervingi in Bessarabia and defeating them.
Although Valens obtains a victory for the Romans, they retreat (possibly because of the lateness of the season) and the Goths ask for a peace treaty, which is signed in the middle of the Danube, the Goths taking an oath to never set foot on Roman soil.
The treaty seems to have largely cut off relations between Goths and Romans, including free trade and the exchange of troops for tribute.
Valens will feel this loss of military manpower in the following years.