451 in history

451 events chronologically

Apr 7 Attila the Hun sacks the town of Metz and attacks other cities in Gaul
May 26 Battle of Avarayr between Armenian rebels and the Sassanid Empire takes place. The Empire defeats the Armenians militarily but guarantees them freedom to openly practice Christianity
Jun 20 Battle of Chalons: Flavius Aetius' battles Attila the Hun. After the battle, which was inconclusive, Attila retreats, causing the Romans to interpret it as a victory
Oct 8 At Chalcedon, a city of Bithynia in Asia Minor, the first session of the Council of Chalcedon begins (ends on November 1)
Oct 22 The Council of Chalcedon adopts the Chalcedonian Creed regarding the divine and human nature of Jesus Christ