The Battle of Hamburger Hill was a battle of the Vietnam War that was fought by the United States and South Vietnam against North Vietnamese forces from May 10–20, 1969. Although the heavily fortified Hill 937 was of little strategic value, U.S. command ordered its capture by a frontal assault, only to abandon it soon…

526 Antioch earthquake – 20 May The 526 Antioch earthquake hit Syria (region) and Antioch in the Byzantine Empire in 526. It struck during late May, probably between May 20–29, at mid-morning, killing approximately 250,000 people. The earthquake was followed by a fire that destroyed most of the buildings left standing by the earthquake. The…

The First Council of Nicaea was a council of Christian bishops convened in the Bithynian city of Nicaea (now İznik, Bursa province, Turkey). This ecumenical council was the first effort to attain consensus in the Church through an assembly representing all of Christendom. Hosius of Corduba, who was probably one of the Papal legates, may…