Battle of Adrianople

Battle context

The Battle of Adrianople, fought on 9 August 378 near Adrianople in the Roman province of Thracia, delivered an overwhelming Gothic victory over the Eastern Roman army and resulted in the death of Emperor Valens. Roman casualties of between 10,000 and 15,000 — drawn from a force of roughly 15,000 — indicate near-total destruction of the Eastern Roman field army engaged. The loss of Valens left the Eastern Empire without its ruling emperor at a critical moment in the Gothic War of 376–382, which had erupted following the entry of Gothic groups under Fritigern, Alatheus, and Saphrax into Roman territory. The battle stands as one of the most consequential defeats in late Roman military history, demonstrating that Gothic forces operating inside the empire could destroy a Roman army in open engagement and kill a reigning emperor — an outcome that forced the Eastern Empire to reckon with the Gothic presence in the Balkans on fundamentally different terms for the remainder of the war.