Gothic War: Battle of Adrianople: A large Roman army led by Emperor Valens is defeated by the Visigoths. Valens is killed along with over half of his army.
The Battle of Adrianople (9 August 378), sometimes known as the Battle of Hadrianopolis, was fought between an Eastern Roman army led by the Eastern Roman Emperor Valens and Gothic rebels (largely Thervings as well as Greutungs, non-Gothic Alans, and various local rebels) led by Fritigern. The battle took place in the vicinity of Adrianople, in the Roman province of Thracia (modern Edirne in European Turkey). It ended with an overwhelming victory for the Goths and the death of Emperor Valens.Part of the Gothic War (376382), the battle is often considered the start of the process which led to the fall of the Western Roman Empire in the 5th century.
A detailed contemporary account of the lead-up to the battle from the Roman perspective was written by Ammianus Marcellinus and forms the culminating point at the end of his history.
Between 376 and 382 the Gothic War against the Eastern Roman Empire, and in particular the Battle of Adrianople, is commonly seen as a major turning point in the history of the Roman Empire, the first of a series of events over the next century that would see the collapse of the Western Roman Empire, although its ultimate importance to the Empire's eventual fall is still debated. It was one of the many Gothic Wars with the Roman Empire.