By place Roman Empire • Emperor
Valens is converted to
Arianism, and orders the persecution of Trinitarian
Christians in the
Roman East. •
Quintus Aurelius Symmachus becomes
proconsul of
Africa, and is made a member of the pontifical college. •
Count Theodosius is appointed commander of an expedition to suppress the rebellion of
Firmus in
Mauretania. • The
Aqueduct of Valens is inaugurated near
Constantinople (modern
Istanbul); the
aqueduct has a length of 971 meters.
Europe •
Battle of the Tanais River: The
Huns defeat the
Alans near the
Don, sending the remnants fleeing westward.
Persia • King
Shapur II declares war as a result of Valens' support of
Armenia. Emperor Valens makes
Antioch his military base for the campaign against
Persia.
By topic Religion •
Saint Martin of Tours undertakes the
Christianization of
Gaul. == Births ==