Once Douglass had arrived New York, he sent for Murray to follow him north to New York. She brought with her the necessary basics for them to set up a home. They were married on September 15, 1838, by a black Presbyterian minister, just eleven days after Douglass had reached New York. Douglass and Anna had five children: Rosetta Douglass, Lewis Henry Douglass, Frederick Douglass Jr., Charles Remond Douglass, and Annie Douglass (died at the age of ten).
On 15 September, the Imperial Japanese Army converged on the city of Pyongyang from several directions. The Japanese assaulted the city and eventually defeated the Chinese by an attack from the rear; the defenders surrendered. Taking advantage of heavy rainfall overnight, the remaining Chinese troops escaped Pyongyang and headed northeast toward the coastal city of Uiju. Casualties were 2,000 killed and around 4,000 wounded for the Chinese, while the Japanese casualties totaled 102 men killed, 433 wounded, and 33 missing. In the early morning of 16 September, the entire Japanese army entered Pyongyang.
The Chinese warships spent the entire day cruising the area, waiting for the Japanese. However, since there was no sighting of the Japanese fleet, Admiral Ding decided to return to Dalian, reaching the port in the morning of September 15.
Mao was appointed commander-in-chief of the Red Army and led four regiments against Changsha in the Autumn Harvest Uprising, in the hope of sparking peasant uprisings across Hunan. On the eve of the attack, Mao composed a poem—the earliest of his to survive—titled "Changsha". His plan was to attack the KMT-held city from three directions on September 9, but the Fourth Regiment deserted to the KMT cause, attacking the Third Regiment. Mao's army made it to Changsha, but could not take it; by September 15, he accepted defeat and with 1000 survivors marched east to the Jinggang Mountains of Jiangxi.
The Nazis embraced the concept of racial hygiene. On 15 September 1935, Hitler presented two laws—known as the Nuremberg Laws—to the Reichstag. The laws banned sexual relations and marriages between Aryans and Jews and were later extended to include "Gypsies, Negroes or their bastard offspring".
On 15 September 1940, known as the Battle of Britain Day, an RAF pilot, Ray Holmes of No. 504 Squadron RAF rammed a German Dornier Do 17 bomber he believed was going to bomb the Palace. Holmes had run out of ammunition and made the quick decision to ram it. Holmes bailed out and the aircraft crashed into the forecourt of London Victoria station.
The Lapland War was fought between Finland and Nazi Germany effectively from 15 September 1944 to 27 April 1945 in Finland's northernmost region, Lapland. The Wehrmacht successfully withdrew and Finland upheld its obligations under the Moscow Armistice, although it remained formally at war with the USSR and the United Kingdom until ratification of the 1947 Paris Peace Treaty.
By 15 September, the amphibious assault force faced few KPA defenders at Incheon: military intelligence, psychological warfare, guerrilla reconnaissance, and protracted bombardment facilitated a relatively light battle. However, the bombardment destroyed most of the city of Incheon.
In September 1991, Croatian National Guard (ZNG) organised armed incursions across the Croatian border into Bosnia. ZNG opened mortar fire on Bosanska Dubica on 13 September 1991, and raided Bosanski Brod on 15 September 1991.
There were reports of attacks on mosques and other religious buildings (including the firebombing of a Hindu temple), and assaults on people, including one murder: Balbir Singh Sodhi, a Sikh mistaken for a Muslim, was fatally shot on September 15, 2001, in Mesa, Arizona.
September 15, 2008: Lehman Brothers went bankrupt after the Federal Reserve declined to guarantee its loans, causing the Dow Jones to drop 504 points, its worst decline in seven years. The same day, Bank of America purchased Merrill Lynch.
On 15 September, ten university heads in Hong Kong, City University of Hong Kong, Hong Kong Baptist University, Hong Kong Shue Yan University, Lingnan University, the Chinese University of Hong Kong, the Education University of Hong Kong, the Hong Kong Polytechnic University, the Hong Kong University of Science and Technology, the Open University of Hong Kong and the University of Hong Kong, condemned the "recent abuses" of the freedom of expression in a joint statement, adding that all the universities do not support Hong Kong independence as it contravenes the Basic Law.