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 Gothic War of 376–382 was one of several Gothic Wars in Roman history in which the Goths fought against the Roman Empire. This particular conflict included the catastrophic Roman defeat at the Battle of Adrianople, which is commonly seen as a cause of the decline of the Western Roman Empire,…