A sad day in history, no doubt, to a lot of people.
In other years and places there were ...
* 9 – The Battle of the Teutoburg Forest ends.
* 1185 – Isaac II Angelus kills Stephanus Hagiochristophorites and then appeals to the people, resulting in the revolt that deposes Andronicus I Comnenus and places Isaac on the throne of the Byzantine Empire.
* 1297 – Battle of Stirling Bridge: Scots jointly-led by William Wallace and Andrew Moray defeat the English.
* 1390 – Lithuanian Civil War (1389–1392): the Teutonic Knights begin a five-week siege of Vilnius.
* 1541 – Santiago, Chile, is destroyed by indigenous warriors, lead by Michimalonko.
* 1609 – Expulsion order announced against the Moriscos of Valencia; beginning of the expulsion of all Spain's Moriscos.
* 1649 – Siege of Drogheda ends: Oliver Cromwell's English Parliamentarian troops take the town and execute its garrison.
* 1683 – John III Sobieski of Poland arrives on Kahlen Hill, leading to the Battle of Vienna the following day.
* 1697 – Battle of Zenta.
* 1709 – Battle of Malplaquet: Great Britain, Netherlands and Austria fight against France.
* 1714 – Barcelona surrenders to Spanish and French Bourbon armies in the War of the Spanish Succession.
* 1758 – Battle of Saint Cast: France repels British invasion during the Seven Year's War.
* 1776 – British-American peace conference on Staten Island fails to stop nascent American Revolution.
* 1777 – American Revolution: Battle of Brandywine – The British celebrate a major victory in Chester County, Pennsylvania.
* 1814 – War of 1812: The climax of the Battle of Plattsburgh, a major United States victory in the war.
* 1857 – The Mountain Meadows Massacre: Mormon settlers and Paiutes massacre 120 pioneers at Mountain Meadows, Utah.
* 1888 – Death of the Argentine politician Domingo Sarmiento, after whom the Latin American Teacher's Day is chosen.
* 1897 – After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
* 1914 – Australia invades New Britain, defeating a German contingent there.
* 1916 – The Quebec Bridge's central span collapses, killing 11 men. The bridge initially collapsed in toto on August 29, 1907.
* 1919 – U.S. Marines invade Honduras.
* 1931 – Salvatore Maranzano is murdered by Charles Luciano's hitmen.
* 1932 – Franciszek Żwirko and Stanisław Wigura, Polish Challenge 1932 winners, are killed when their RWD 6 airplane crashes into the ground during a storm.
* 1940 – George Stibitz pioneers the first remote operation of a computer.
* 1940 – World War II: Buckingham Palace is damaged during a German air raid.
* 1941 – Ground is broken for the construction of The Pentagon. 
Didn't know that - wonder whether the terrorists did? * 1941 – World War II: The U.S. Navy is ordered to attack German U-boats.
* 1943 – World War II: Start of the liquidation of the Ghettos in Minsk and Lida by the Nazis.
* 1944 – World War II: RAF bombing raid on Darmstadt and the following firestorm kill 11,500.
* 1961 – Hurricane Carla strikes the Texas coast as a Category 4 hurricane, the strongest storm ever to hit the state.
* 1965 – The 1st Cavalry Division of the United States Army arrives in Vietnam.
* 1968 – Air France Flight 1611 crashes off Nice, France, killing 89 passengers and 6 crew.
* 1973 – A CIA backed coup in Chile headed by General Augusto Pinochet topples the democratically elected President Salvador Allende. Pinochet remains in power for almost 17 years.
* 1974 – Eastern Air Lines Flight 212 crashes in Charlotte, North Carolina, killing 69 passengers and two crew.
* 1981 – A small plane crashes into the Swing Auditorium in San Bernardino, California damaging it beyond repair.
* 1990 – U.S. President George H. W. Bush delivers a nationally televised speech in which he threatens the use of force to remove Iraqi soldiers from Kuwait, which Iraq had recently invaded.
* 1992 – Hurricane Iniki, one of the most damaging hurricanes in United States history, devastates Hawaii, especially the islands of Kauai and Oahu.
* 2001 – The September 11 attacks take place in the United States. Airplane hijackings result in the collapse of the World Trade Center in New York City, destruction of the western portion of The Pentagon in Arlington, Virginia, and a passenger airliner crash in Shanksville, Pennsylvania.
* 2003 – Swedish foreign minister Anna Lindh dies after being assaulted and fatally wounded on September 10.
* 2004 – All passengers are killed when a helicopter crashes in the Aegean Sea. Passengers include Patriarch Peter VII of Alexandria and 16 others (including journalists and bishops of the Greek Orthodox Church of Alexandria).
* 2007 – Russia tests the largest conventional weapon ever, the Father of all bombs. Does Man ever learn? 
Here's a pic to mourn the deaths of all those innocent people:
Didn't know that - wonder whether the terrorists did?
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