September 15th...

* 668 – Eastern Roman Emperor Constans II is assasinated in his bath at Syracuse, Italy.
* 921 – Saint Ludmila is murdered at the command of her daughter-in-law at Tetin.
* 1556 – Departing from Vlissingen, ex-Holy Roman Emperor Charles V returns to Spain.
* 1584 – San Lorenzo del Escorial Palace in Madrid is finished.
* 1600 – Battle of Sekigahara.
* 1616 – The first non-aristocratic, free public school in Europe is opened in Frascati, Italy.
* 1762 – Battle of Signal Hill.
* 1776 – American Revolutionary War: British forces land at Kip's Bay during the New York Campaign.
* 1789 – The United States Department of State is established (formerly known as Department of Foreign Affairs).
* 1812 – The French army under Napoleon reaches the Kremlin in Moscow.
* 1812 – War of 1812: A second supply train sent to relieve Fort Harrison is ambushed in the Attack at the Narrows.
* 1820 – Constitutionalist revolution in Lisbon, Portugal; (see Portugal's crises of the Nineteenth Century.
* 1821 – Guatemala, El Salvador, Honduras, Nicaragua, and Costa Rica jointly declare independence from Spain.
* 1830 – The Liverpool to Manchester railway line opens (see also deaths, below).
* 1831 – The locomotive John Bull operates for the first time in New Jersey on the Camden and Amboy Railroad.
* 1835 – HMS Beagle, with Charles Darwin aboard, reaches the Galápagos Islands.
* 1851 – Saint Joseph's University is founded in Philadelphia, Pennsylvania.
* 1862 – American Civil War: Confederate forces capture Harpers Ferry, Virginia.
* 1873 – Franco-Prussian War: The last German troops leave France upon completion of payment of indemnity.
* 1883 – The Bombay Natural History Society is founded in Bombay (now Mumbai), India.
* 1894 – First Sino-Japanese War: Japan defeats China in the Battle of Pyongyang.
* 1916 – World War I: Tanks are used for the first time in battle, at the Battle of the Somme.
* 1928 – Tich Freeman becomes the only bowler to take 300 wickets in an English cricket season.
* 1931 – In Scotland, the two-day Invergordon Mutiny against Royal Navy pay cuts begins.
* 1935 – Nuremberg Laws deprive German Jews of citizenship.
* 1935 – Nazi Germany adopts a new national flag with the swastika.
* 1940 – World War II: The climax of the Battle of Britain, when the Royal Air Force shoots down large numbers of Luftwaffe aircraft.
* 1942 – World War II: U.S. Navy aircraft carrier USS Wasp is torpedoed at Guadalcanal.
* 1944 – Franklin D. Roosevelt and Winston Churchill meet in Quebec as part of the Octagon Conference to discuss strategy.
* 1945 – A hurricane in southern Florida and the Bahamas destroys 366 planes and 25 blimps at NAS Richmond.
* 1947 – RCA releases the 12AX7 vacuum tube.
* 1947 – Typhoon Kathleen hit the Kanto Region in Japan killing 1,077.
* 1948 – The F-86 Sabre sets the world aircraft speed record at 671 mph (1080 km/h).
* 1950 – Korean War: United States forces land at Incheon
* 1952 – United Nations gives Eritrea to Ethiopia.
* 1957 – West Germany holds its third parliamentary election. Konrad Adenauer remains chancellor.
* 1958 – A Central Railroad of New Jersey commuter train runs through an open drawbridge at the Newark Bay, killing 58.
* 1959 – Nikita Khrushchev becomes the first Soviet leader to visit the United States.
* 1961 – Hurricane Carla strikes Texas with winds of 175 miles per hour.
* 1962 – The Soviet ship Poltava heads toward Cuba, one of the events that sets into motion the Cuban Missile Crisis.
* 1963 – The 16th Street Baptist Church bombing: Four children killed at an African-American church in Birmingham, Alabama, United States
* 1966 – U.S. President Lyndon B. Johnson, responding to a sniper attack at the University of Texas at Austin, writes a letter to Congress urging the enactment of gun control legislation.
* 1968 – The Soviet Zond 5 spaceship is launched, becoming the first spacecraft to fly around the Moon and re-enter the Earth's atmosphere.
* 1972 – A magnitude 4.5 earthquake shakes Northern Illinois.
* 1972 – An Scandinavian Airlines System domestic flight from Gothenburg to Stockholm was hijacked and flown to Malmö-Bulltofta Airport.
* 1974 – Air Vietnam flight 727 is hijacked, then crashes while attempting to land with 75 on board.
* 1975 – The French département of Corse (the entire island of Corsica) is divided into two: Haute-Corse and Corse-du-Sud.
* 1981 – The Senate Judiciary Committee unanimously approves Sandra Day O'Connor to become the first female justice of the Supreme Court of the United States
* 1981 – The John Bull becomes the oldest operable steam locomotive in the world when the Smithsonian Institution operates it under its own power outside Washington, D.C.
* 1981 – Vanuatu becomes a member of the United Nations.
* 1983 – Israeli premier Menachem Begin resigns.
* 1987 – United States Secretary of State George Shultz and Soviet Foreign Minister Eduard Shevardnadze sign a treaty to establish centers to reduce the risk of nuclear war.
* 1989 – The United States Congress recognizes Terry Anderson's continued captivity in Beirut.
* 1990 – France announces it will send 4,000 troops to the Persian Gulf
* 1993 – Liechtenstein Prince Hans-Adam II disbands Parliament
* 1998 – With the landmark merger of WorldCom and MCI Communications completed the day prior, the new MCI WorldCom opens its doors for business.
* 2004 – National Hockey League commissioner Gary Bettman announces lockout of the players union and cessation of operations by the NHL head office.
* 2008 – Lehman Brothers file Chapter 11 bankruptcy, the largest bankruptcy filing in U.S. History.
*2009 - BISHOP KENT MANNING released.