Battle in 380 between the Goths and the Romans
The Battle of Thessalonica was fought in the summer or autumn of 380 by Fritigern's Goths and a Roman army led by Theodosius I. Reconstituted after Adrianople, the East Roman army suffered another major defeat. Theodosius retreated to Thessalonica and surrendered control of operations to the Western Emperor, Gratian.
References
40°38′25″N 22°56′38″E / 40.6403°N 22.9439°E / 40.6403; 22.9439