in 1787, 39 (out of 42 at the time) members of the Philadelphia Constitutional Convention signed the U.S. Constitution they adopted, which consisted of 7 articles and is still in force (with 21 one amendment) today.
in 1788 Battle of the Austro-Turkish War, fought on September 17, 1788 near the modern Romanian town of Caransebes. The Austrian army, awaiting the arrival of Turkish troops, was virtually annihilated after a few drunken soldiers got into a brawl, which was soon joined by the rest of the army; casualties increased due to false reports of the Turks' arrival, leading to a mass panic flight of Austrian soldiers from the battlefield. 10,000 killed and wounded (the wounded were finished off by the approaching Turks). The battle is one of the ridiculous examples of “friendly fire”.
in 1862 Entiatem/Sharpsburg Battle between General Robert E. Lee's Confederate army invading Maryland and General George C. McClellan's Federal army.
Using intercepts of Secret Order No. 9, McClellan located the scattered units of the North Virginia Army and decided to destroy them piece by piece.
But, insufficiently energetic implementation of his plan led to the fact that by September 17 at the position between the Potomac River and its left tributary - the Entiethem Creek, in the suburbs of the town of Sharpsberg, General Lee, instead of the 20-thousandth corps, which he had the day before, was able to gather already 35 thousand (almost all the free parts of the North Virginian Army). Although the Federal army was more than twice (75,000) superior in numbers, it failed to break through the Confederate positions and overturn them into the Potomac, and two days later, General Lee's army left for the Potomac in good order.
Each side lost about 12,000 killed and wounded. Although the tactical victory was on the side of the Southerners who held their ground, the strategic victory (repulsing the Confederate army's invasion of Union territory) belonged to the Northerners.
In 1908, during a demonstration flight of the Wright brothers' airplane (“Flyer”), a passenger, American Army Lieutenant Thomas Selfridge, was killed, becoming the first victim of an airplane crash. The pilot, Orville Wright, suffered a fractured hip and several broken ribs.
in 1939, southwest of Ireland, the British aircraft carrier "Courages" was sunk by two torpedoes from the German submarine U-29, becoming the Kriegsmarine's first victory over Royal Navy.
in 1944 began Operation Market Garden, the largest airborne operation in World War II and the most significant Allied defeat on the Western Front.
In 1948, the UN mediator in Palestine, Count Folke Bernadotte, was shot dead near Jerusalem along with his escort, Colonel André Serot, on the pretext of checking his documents at a checkpoint. 30 years later, it was recognized that the assassination attempt was carried out by members of the Lehi organization ( Zionist paramilitary militant group) disguised as Israeli army soldiers.
in 1978, negotiations at U.S. President Jimmy Carter's country residence at Camp David between Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin culminated in the signing of a peace treaty.
in 1980 in Asunción, 7 Argentine fighters (3 of them women) from the “Revolutionary Army of the People”, under the sentence of the Nicaraguan leadership, shot up the armored limousine of former dictator Anastasio Somoza, who was killed in an assassination attempt, using grenade launchers and automatic rifles. Paraguayan police managed to capture and, after torture, kill a member of the group.
in 2008, al-Qaeda in Yemen made an unsuccessful attempt to infiltrate the U.S. embassy in Sanaa. During the battle, 6 militants armed with assault rifles and rocket-propelled grenades disguised as policemen were killed (a booby-trapped car bombing was also used), 6 policemen from embassy security, and 6 random civilians.