590 – Gregory I became pope, the first one to come from a monastic background.
1651 – English Parliamentarian forces under Oliver Cromwell won the Battle of Worcester, the final battle of the Third English Civil War.
1901 – The National Flag of Australia, a Blue Ensign defaced with the Commonwealth Star and the Southern Cross, flew for the first time atop the Royal Exhibition Building in Melbourne.
1925 – The USS Shenandoah, the U.S. Navy's first rigid airship, was torn apart in a squall line over Ohio (wreckage pictured).
1941 – The Holocaust: SS-Hauptsturmführer Karl Fritzsch first used the pesticide Zyklon B to execute Soviet POWs en masse at Auschwitz; eventually it was used to kill about 1.2 million people.
Original Image Credit📷: https://goo.gl/NUxyeV