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378 Event

August 9

Visigoths Destroy Roman Army: Emperor Valens Killed

Visigoth cavalry encircled and destroyed a massive Roman army at Adrianople, killing Emperor Valens and more than half his troops in the worst Roman military defeat since Cannae nearly six centuries earlier. The Romans had underestimated the Visigoths' cavalry strength and attacked before reinforcements arrived, a miscalculation that proved fatal. The catastrophe demonstrated that Rome could no longer defend its frontiers against determined migration and accelerated the empire's dependence on barbarian mercenaries for its own survival.

August 9, 378

1648 years ago

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