September 26 in History

Gaius Julius Caesar was a Roman general, statesman, and author who was the dictator of the Roman Republic almost continuously from 49 BC until his assassination in 44 BC. A member of the First Triumvirate, he led the Roman armies through the Gallic Wars and defeated his political rival Pompey in Caesar's civil war. He consolidated power and was titled as dictator perpetuo in 44 BC, helping create the political conditions that led to the collapse of the Roman Republic and the emergence of the Roman Empire. For his role in these events, he is regarded as one of history's most influential figures.

William II (Anglo-Norman: Williame; c. 1057 – 2 August 1100) was King of England from 26 September 1087 until his death in 1100, with powers over Normandy and influence in Scotland. He was less successful in extending his control into Wales. The third son of William the Conqueror, he is commonly referred to as William Rufus (Rufus being Latin for "the Red"), perhaps because of his ruddy appearance or, more likely, because he had red hair. William was a figure of complex temperament, capable of both bellicosity and flamboyance. He did not marry or have children, which – along with contemporary accounts – has led some historians to speculate on his sexuality. He died after being hit by an arrow while hunting. Circumstantial evidence in the behaviour of those around him – including his younger brother Henry I – raises strong but unproven suspicions of murder. Upon William's death, Henry immediately seized the treasury and had himself crowned king. Historian Frank Barlow writes that William was a "rumbustious, devil-may-care soldier, without natural dignity or social graces, with no cultivated tastes and little show of conventional religious piety or morality – indeed, according to his critics, addicted to every kind of vice, particularly lust and especially sodomy." On the other hand, he was a wise ruler and victorious general, Barlow writes: "His chivalrous virtues and achievements were all too obvious. He had maintained good order and satisfactory justice in England and restored good peace to Normandy. He had extended Anglo-Norman rule in Wales, brought Scotland firmly under his lordship, recovered Maine, and kept up the pressure on the Vexin."

Stephen, often referred to as Stephen of Blois, was King of England from 22 December 1135 to his death in 1154. He was Count of Boulogne jure uxoris from 1125 until 1147 and Duke of Normandy from 1135 until 1144. His reign was marked by the Anarchy, a civil war with his cousin and rival, the Empress Matilda, whose son, Henry II, succeeded Stephen as the first of the Angevin kings of England.

A papal election on 26 September 1143 followed the death of Innocent II and resulted in the election of Celestine II as the new pope of the Roman Catholic Church.

The Golden Bull of Sicily (Czech: Zlatá bula sicilská; Latin: Bulla Aurea Siciliæ) was a decree issued by the King of Sicily and future Emperor Frederick II in Basel on 26 September 1212 that confirmed the royal title obtained by Ottokar I of Bohemia in 1198, declaring him and his heirs kings of Bohemia. The kingship signified the exceptional status of Bohemia within the Holy Roman Empire. Ottokar's Přemyslid ancestor Vratislaus II had already been elevated to kingship by Emperor Henry IV in 1085 at the diet in Mainz. He was crowned at Prague by Archbishop Egilbert of Trier the next year, the title however was not hereditary and upon his death in 1092, his brother Conrad I succeeded him again as duke. In 1158 Vratislaus' grandson Vladislaus II achieved kingship again, bestowed by Emperor Frederick Barbarossa, whom he had accompanied on his Italian campaign against Milan, but failed to secure the succession of his eldest son Frederick. In September 1198 Frederick's younger half-brother Ottokar I made use of the rivalry among Otto IV from the House of Welf and the Hohenstaufen duke Philip of Swabia, youngest son of Emperor Frederick Barbarossa, who both had been elected King of the Romans. He received the hereditary royal title from Philip for his support and, maneuvering between both sides, achieved the acknowledgement by Otto IV as well as by Pope Innocent III. After the assassination of Philip and the papal ban imposed on Otto IV in 1210, Ottokar again switched sides, when he and several princes in 1211 convened at Nuremberg and elected the young Hohenstaufen scion Frederick II alium imperatorem ("Other Emperor"). Frederick, then king of Sicily, left for his coronation in Germany, reaching Basel in September 1212. Here he issued the Golden Bull that confirmed the kingship of Ottokar I and his heirs in Bohemia. According to the Golden Bull of Sicily, the estates of Bohemia and Moravia were an autonomous and indivisible constituent of the Holy Roman Empire. The king of Bohemia was no longer subject to appointment by the emperor, and was only required to attend Reichstag diets close to the Bohemian border. Although a subject of the Holy Roman Empire, the Bohemian king was to be the premier prince-elector (Kurfürst) of the Empire and to furnish all subsequent emperors with a bodyguard of 300 knights when they went to Rome for their coronation. By this act Frederick II also declared that he and the Empire will give the investiture for Bohemia only to a ruler approved by the people of the country. When in 1346 King Charles IV united the rule over Bohemia and Germany in his hands, he established the Crown of Bohemia, which remained beyond the Empire's suzerainty and were not considered Imperial States. As part of the 800th anniversary of the document's signature, the document was put on public display at the National Archive for four days in September 2012.

The Battle of Staveren, also known as the Battle of Warns (West Frisian: Slach by Warns; Dutch: Slag bij Warns), was a battle of the Friso-Hollandic Wars between Count William IV of Holland and the Frisians which took place on 26 September 1345. The annual commemoration of the battle is important for many nationalist Frisians. The Frisians won the battle and repelled the 'Hollanders' from the eastern coast of the Zuiderzee.

The Battle of Maritsa, also known as the Battle of Chernomen (Serbian: Marička bitka / Маричка битка; Turkish: Çirmen Muharebesi, İkinci Meriç Muharebesi; "Second Battle of Maritsa"), was fought on 26 September 1371 near the Maritsa River, close to the village of Chernomen (present-day Ormenio, Greece). The conflict pitted the Ottoman forces under Lala Şahin Pasha and Hacı İlbey against a coalition of Serbian lords, led by King Vukašin Mrnjavčević and his brother Despot Jovan Uglješa who sought to halt the Ottomans' westward advance. The battle ended in a decisive Ottoman victory in which both Serbian commanders were killed, marking the decline of Serbian power in Macedonia and paving the way for Ottoman expansion into the central Balkans.

The Hundred Years' War (French: Guerre de Cent Ans; 1337–1453) was a series of conflicts between the kingdoms of England and France and a civil war in France during the late Middle Ages. It emerged from feudal disputes over the Duchy of Aquitaine and was triggered by a claim to the French throne made by Edward III of England. The war grew into a broader military, economic, and political struggle involving different factions from across Western Europe, fuelled by emerging nationalism on both sides. The periodisation of the war typically charts it as taking place over 116 years. However, it was an intermittent conflict which was frequently interrupted by external factors, such as the Black Death, and several years of truces. The Hundred Years' War was a significant conflict in the Middle Ages. During the war, five generations of kings from two rival dynasties fought for the throne of France, then the wealthiest and most populous kingdom in Western Europe. The war had a lasting effect on European history: both sides produced innovations in military technology and tactics, including professional standing armies and artillery, that permanently changed European warfare. Chivalry reached its height during the conflict and subsequently declined. Stronger national identities took root in both kingdoms, which became more centralized and gradually emerged as global powers. The term "Hundred Years' War" was adopted by later historians and included dynastically related conflicts in Spain and Belgium, resulting in the longest military conflict in European history. The war is commonly divided into three phases, separated by truces: the Edwardian War (1337–1360), the Caroline War (1369–1389), and the Lancastrian War (1415–1453). Each side drew many allies into the conflict, with English forces initially prevailing; however, the French forces under the House of Valois ultimately retained control over the Kingdom of France. The French and English monarchies thereafter remained separate, despite the monarchs of England and Great Britain styling themselves as sovereigns of France until 1802.

Dudum siquidem (Latin for "A short while ago") was a papal bull issued by Pope Alexander VI on 26 September 1493, one of the Bulls of Donation addressed to the Catholic Monarchs Isabella I of Castile and Ferdinand II of Aragon which supplemented the bull Inter caetera and granted to them "all islands and mainlands whatsoever, found and to be found, discovered and to be discovered, that are or may be or may seem to be in the route of navigation or travel towards the west or south, whether they be in western parts, or in the regions of the south and east and of India".

Sir Francis Drake (c. 1540 – 28 January 1596) was an English explorer and privateer best known for making the second circumnavigation of the world in a single expedition between 1577 and 1580 (being the first English expedition to accomplish this). He is also known for participating in the early English slaving voyages of his cousin, John Hawkins, and John Lovell. Having started as a simple seaman, in 1588 he was part of the fight against the Spanish Armada as a vice admiral. At an early age, Drake was placed into the household of a relative, William Hawkins, a prominent sea captain in Plymouth. In 1572, he set sail on his first independent mission, privateering along the Spanish Main. Drake's circumnavigation began on 13 December 1577. He crossed the Pacific Ocean, until then an area of exclusive Spanish interest, and laid claim to New Albion, plundering coastal towns and ships for treasure and supplies as he went. He arrived back in England on 26 September 1580. Elizabeth I awarded Drake a knighthood in 1581 which he received aboard his galleon the Golden Hind. Drake's circumnavigation of the Earth inaugurated an era of conflict with the Spanish and in 1585, the Anglo-Spanish War began. Drake was in command of an expedition to the Americas that attacked Spanish shipping and ports. When Philip II sent the Spanish Armada to England in 1588 as a precursor to its invasion, Drake was second-in-command of the English fleet that fought against and repulsed the Spanish fleet. A year later he led the English Armada in a failed attempt to destroy the remaining Spanish fleet. Drake was a Member of Parliament (MP) for three constituencies: Camelford in 1581, Bossiney in 1584, and Plymouth in 1593. Drake's exploits made him a hero to the English, but his privateering led the Spanish to brand him a pirate, known to them as El Draque ("The Dragon" in old Spanish). He died of dysentery after his failed assault on Panama in January 1596.

The Morean war, also known as the Sixth Ottoman–Venetian War, was fought between 1684–1699 as part of the wider conflict known as the "Great Turkish War", between the Republic of Venice and the Ottoman Empire. Military operations ranged from Dalmatia to the Aegean Sea, but the war's major campaign was the Venetian conquest of the Morea (Peloponnese) peninsula in southern Greece.

The Glorious Revolution was the deposition of King James II in November 1688. He was replaced by his daughter Mary II and her Dutch husband, James's nephew William III of Orange. The two ruled as joint monarchs of England, Scotland, and Ireland until Mary's death in 1694, when William became ruler in his own right. Jacobitism, the political movement that aimed to restore the exiled James or his descendants of the House of Stuart to the throne, persisted into the late 18th century. Some historians consider William's invasion the last successful invasion of England. Despite being a Roman Catholic, James had become king in February 1685 with widespread backing from the Protestant majorities in England and Scotland, as well as largely Catholic Ireland, but his policies quickly eroded support. The prospect of a Catholic dynasty following the birth of his son James Francis Edward Stuart on 10 June 1688 led some of his domestic opponents to issue the Invitation to William, seeking Dutch support to remove him. The Dutch States General and William of Orange were concerned that James might support France in the Nine Years' War. Exploiting unrest in England and claiming to be responding to the invitation, William landed with an army in Devon on 5 November 1688. As William advanced on London, James's army disintegrated and he went into exile in France on 23 December. In April 1689, a Convention made William and Mary joint monarchs of England and Ireland. A separate but similar Scottish settlement was made in June 1689. Domestically, the Revolution confirmed the primacy of Parliament over the Crown in both England and Scotland. In terms of external policy, until his death in 1702, William combined the roles of Dutch stadtholder and English and Scottish monarch. Both states thus became allies in resisting French expansion, an alliance which persisted for much of the 18th century, despite differing objectives.

The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence or simply the American Revolution, was the armed conflict that comprised the final eight years of the broader American Revolution, in which American Patriot forces organized as the Continental Army and, commanded by George Washington, defeated the British Army. The conflict was fought in North America, the Caribbean, and the Atlantic Ocean. The war's outcome seemed uncertain for most of the war, but Washington and the Continental Army's decisive victory in the Siege of Yorktown in 1781 led King George III and the Kingdom of Great Britain to negotiate an end to the war. In 1783, in the Treaty of Paris, the British monarchy acknowledged the independence of the Thirteen Colonies, leading to the establishment of the United States as an independent and sovereign nation. In 1763, after the British Empire gained dominance in North America following its victory over the French in the Seven Years' War, tensions and disputes began escalating between the British and the Thirteen Colonies, especially following passage of the Stamp and Townshend Acts. The British Army responded by seeking to occupy Boston militarily, leading to the Boston Massacre on March 5, 1770. In mid-1774, with tensions escalating even further between the British Army and the colonies, the British Parliament imposed the Intolerable Acts, an attempt to disarm Americans, leading to the Battles of Lexington and Concord in April 1775, the first battles of the Revolutionary War. In June 1775, the Second Continental Congress voted to incorporate colonial-based Patriot militias into a central military, the Continental Army, and unanimously appointed Washington its commander-in-chief. Two months later, in August 1775, George III declared the colonies to be in a state of rebellion. In July 1776, the Second Continental Congress formalized the war, passing the Lee Resolution on July 2, and, two days later, unanimously adopting the Declaration of Independence, on July 4. In March 1776, in an early win for the newly-formed Continental Army under Washington's command, following a successful siege of Boston, the Continental Army successfully drove the British Army out of Boston. British commander in chief William Howe responded by launching the New York and New Jersey campaign, which resulted in Howe's capture of New York City in November. Washington responded by clandestinely crossing the Delaware River and winning small but significant victories at Trenton and Princeton. In the summer of 1777, as Howe was poised to capture Philadelphia, the Continental Congress fled to Baltimore. In October 1777, a separate northern British force under the command of John Burgoyne was forced to surrender at Saratoga in an American victory that proved crucial in convincing France and Spain that an independent United States was a viable possibility. France signed a commercial agreement with the revolutionaries, followed by a Treaty of Alliance in February 1778. In 1779, the Sullivan Expedition undertook a scorched earth campaign against British-allied factions of the Haudenosaunee Confederacy (also Iroquois). Native American raids on the American frontier, however, continued to be a problem. Also, in 1779, Spain allied with France against Great Britain in the Treaty of Aranjuez, though Spain did not formally ally with the Americans. Howe's replacement Henry Clinton intended to take the war against the Americans into the Southern Colonies. Despite some initial success, British General Cornwallis was besieged by a Franco-American army in Yorktown, Virginia, in September and October 1781. The French navy cut off Cornwallis's escape and he was forced to surrender in October. The British wars with France and Spain continued for another two years, but fighting largely ceased in North America. In the Treaty of Paris, signed on September 3, 1783, Great Britain acknowledged the sovereignty and independence of the United States, bringing the American Revolutionary War to an end. The Treaties of Versailles resolved Great Britain's conflicts with France and Spain, and forced Great Britain to cede Tobago, Senegal, and small territories in India to France, and Menorca, West Florida, and East Florida to Spain.

George Washington (February 22, 1732 [O.S. February 11, 1731] – December 14, 1799) was a Founding Father and the first president of the United States, serving from 1789 to 1797. As commander of the Continental Army, Washington led Patriot forces to victory in the American Revolutionary War against the British Empire. He is commonly known as the Father of His Country for his role in bringing about American independence. Born in the Colony of Virginia, Washington became the commander of the Virginia Regiment during the French and Indian War from 1754 to 1763. He was later elected to the Virginia House of Burgesses, and opposed the oppression of the American colonists by the British Crown. When the American Revolutionary War against the British began in 1775, Washington was appointed commander-in-chief of the Continental Army. He directed a poorly organized and equipped force against disciplined British troops. Washington and his army achieved an early victory at the Siege of Boston in March 1776 but were forced to retreat from New York City in November. Washington crossed the Delaware River and won the battles of Trenton in late 1776 and of Princeton in early 1777, then lost the battles of Brandywine and Germantown later that year. He faced criticism of his command, low troop morale, and a lack of provisions for his forces as the war continued. Ultimately Washington led a combined French and American force to a decisive victory over the British at Yorktown in 1781. In the resulting Treaty of Paris in 1783, the British acknowledged the sovereign independence of the United States. Washington then served as president of the Constitutional Convention in 1787, which drafted the current Constitution of the United States. Washington was unanimously elected the first U.S. president by the Electoral College in 1789 and 1792. He established a strong, well-financed national government while remaining impartial in the fierce rivalry that emerged within his cabinet between Thomas Jefferson and Alexander Hamilton. During the French Revolution, he adopted a policy of neutrality while supporting the Jay Treaty with Britain. Washington set enduring precedents for the office of president, including republicanism, a peaceful transfer of power, the use of the title "Mr. President", and the two-term tradition. His 1796 farewell address became a preeminent statement on republicanism: Washington wrote about the importance of national unity and the dangers that regionalism, partisanship, and foreign influence pose to it. As a planter of tobacco and wheat at Mount Vernon, Washington owned many slaves. He began opposing slavery near the end of his life, and provided in his will for the eventual manumission of his slaves. Washington's image is an icon of American culture and he has been extensively memorialized. His namesakes include the national capital and the State of Washington. In both popular and scholarly polls, he is consistently considered one of the greatest presidents in American history.

The War of the Second Coalition (1798–1802) was the second war between revolutionary France and a coalition of European monarchies, led by Britain, Austria and Russia, and including the Ottoman Empire, Portugal, Naples and various German monarchies. Prussia did not join the coalition, while Spain supported France.

The 1810 Act of Succession (Swedish: 1810 års successionsordning, lit. 'the 1810 order of succession') is one of four Fundamental Laws of the Realm (rikets grundlagar) and thus forms part of the Swedish Constitution. The Act regulates the line of succession to the Swedish throne and the conditions which eligible members of the Swedish royal family must abide by in order to remain in it. It was jointly adopted by the Riksdag of the Estates, convened in Örebro on 26 September 1810, and Charles XIII, as a logical consequence following the election on 21 August of Jean Baptiste Bernadotte as Crown Prince. The actual contents of the Act, save the solemn preamble, has been thoroughly rewritten over the years: the most notable change occurred in 1980 when the core principle of agnatic primogeniture (male succession only) was changed in favor of absolute primogeniture (eldest child regardless of sex).

Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist best known for developing the theory of relativity. Einstein also made important contributions to quantum theory. His mass–energy equivalence formula E = mc2, which arises from special relativity, has been called "the world's most famous equation". He received the 1921 Nobel Prize in Physics for "his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect". Born as a subject to the Kingdom of Württemberg, part of the German Empire, Einstein moved to Switzerland in 1895, forsaking his citizenship the following year. In 1896, at the age of seventeen, he enrolled in the mathematics and physics teaching diploma program at the Swiss federal polytechnic school in Zurich, graduating in 1900. He acquired Swiss citizenship a year later, which he kept for the rest of his life, and afterwards secured a permanent position at the Swiss Patent Office in Bern. In 1905, he submitted a successful PhD dissertation to the University of Zurich. In 1914, he moved to Berlin to join the Prussian Academy of Sciences and the Humboldt University of Berlin, becoming director of the Kaiser Wilhelm Institute for Physics in 1917; he also became a Prussian and consequently also German citizen again. In 1933, while Einstein was visiting the United States, Adolf Hitler came to power in Germany. Horrified by the Nazi persecution of his fellow Jews, he decided to remain in the US, and was granted American citizenship in 1940. On the eve of World War II, he endorsed a letter to President Franklin D. Roosevelt alerting him to the potential German nuclear weapons program and recommending that the US begin similar research, later carried out as the Manhattan Project. In 1905, sometimes described as his annus mirabilis (miracle year), he published four groundbreaking papers. In them, he outlined a theory of the photoelectric effect, explained Brownian motion, introduced his special theory of relativity, and demonstrated that if the special theory is correct, mass and energy are equivalent to each other. In 1915, he proposed a general theory of relativity that extended his system of mechanics to incorporate gravitation. A paper that he published the following year laid out the implications of general relativity for the modeling of the structure and evolution of the universe as a whole. It introduced the cosmological constant and is further regarded as the first step in the field of modern theoretical cosmology. In 1917, Einstein wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser and maser, and which contained a trove of information that would be beneficial to developments in physics later on, such as quantum electrodynamics and quantum optics. In the middle part of his career, Einstein made important contributions to statistical mechanics and quantum theory. Especially notable was his work on the quantum physics of radiation, in which light consists of particles, subsequently called photons. With physicist Satyendra Nath Bose, he laid the groundwork for Bose–Einstein statistics. For much of the last phase of his academic life, Einstein worked on two endeavors that ultimately proved unsuccessful. First, he advocated against quantum theory's introduction of fundamental randomness into science's picture of the world, objecting that "God does not play dice". Second, he attempted to devise a unified field theory by generalizing his geometric theory of gravitation to include electromagnetism. As a result, he became increasingly isolated from mainstream modern physics. Many things are named after him, including the element Einsteinium. In 1999, he was named Time's Person of the Century.

The Federal Trade Commission (FTC) is an independent agency of the United States government whose principal mission is the enforcement of civil (non-criminal) antitrust law and the promotion of consumer protection. It shares jurisdiction over federal civil antitrust law enforcement with the Antitrust Division of the U.S. Department of Justice. The FTC is headquartered in the Federal Trade Commission Building in Washington, D.C. The FTC was established in 1914 by the Federal Trade Commission Act, which the U.S. Congress passed in response to the 19th-century monopolistic trust crisis. Since its inception, the FTC has enforced the provisions of the Clayton Act, a key U.S. antitrust statute, as well as the provisions of the FTC Act, 15 U.S.C. § 41 et seq. Over time, the FTC has been delegated with the enforcement of additional business regulation statutes and has promulgated a number of regulations (codified in Title 16 of the Code of Federal Regulations). The broad statutory authority granted to the FTC provides it with more surveillance and monitoring abilities than it actually uses. The FTC is composed of five commissioners who are nominated by the president and subject to Senate confirmation. Commissioners serve seven-year terms, and historically could only be fired for "inefficiency, neglect of duty, or malfeasance in office". This changed following the Supreme Court's 2026 ruling in Trump v. Slaughter, where the Court determined that the president may fire independent commissioners at will. No more than three FTC members can be from the same party. One member of the body serves as FTC chair at the president's pleasure, with Commissioner Andrew N. Ferguson having served as chair since January 2025.

World War I, or the First World War, also known as the Great War, was a global conflict between two coalitions: the Allies and the Central Powers. One of the deadliest conflicts in history, World War I resulted in an estimated 15 to 22 million deaths, including those in war crimes and genocides. The war also helped spread the Spanish flu pandemic. The conflict saw important developments in weaponry, including the first large-scale use of machine guns, artillery, aircraft, chemical weapons, and tanks.

The Meuse–Argonne offensive (also known as the Meuse River–Argonne Forest offensive, the Battles of the Meuse–Argonne, and the Meuse–Argonne campaign) was a major part of the final Allied offensive of World War I that stretched along the entire Western Front. It was fought from September 26, 1918, until the Armistice of November 11, 1918, a total of 47 days. The Meuse–Argonne offensive was the largest in United States military history, involving 1.2 million American soldiers, sailors and marines, along with 800,000 French and 850 Siamese personnel. It is also the deadliest campaign in the history of the United States Army, resulting in over 300,000 casualties, including 28,000 German lives, 26,277 American lives and about 35,000 French lives. American losses were worsened by the inexperience of many of the troops, the tactics used during the early phases of the operation, and the widespread onset of the Spanish flu. The offensive was the primary engagement of the American Expeditionary Forces (AEF) in World War I and part of the Allies' Hundred Days Offensive that ended the war. It was the AEF's largest and bloodiest operation of the war, though relatively limited in scale compared to other Western Front battles and secondary to the main Allied offensive axis.

The Ukrainian War of Independence, also referred to as the Ukrainian–Soviet War in Ukraine, lasted from March 1917 to November 1921 and was part of the wider Russian Civil War. It saw the establishment and development of an independent Ukrainian republic, most of which was absorbed into the Ukrainian Soviet Socialist Republic between 1919 and 1920. The Ukrainian Soviet Socialist Republic was one of the constituent republics of the Soviet Union between 1922 and 1991. The war was fought between different governmental, political and military forces. Belligerents included Ukrainian nationalists, Ukrainian anarchists, the forces of Germany and Austria-Hungary, the White Russian Volunteer Army, and Second Polish Republic forces. They struggled for control of Ukraine after the February Revolution of 1917. The war ensued soon after the October Revolution, when the Bolshevik leader Vladimir Lenin dispatched the Antonov's expeditionary group to Ukraine and Southern Russia. The war resulted in the absorption of Ukrainian populations into the newly created Soviet Union and the Second Polish Republic. Soviet historical tradition viewed the Bolshevik victory as the liberation of Ukraine from occupation by the armies of Western and Central Europe, including that of Poland. Modern Ukrainian historians consider it a failed war of independence by the Ukrainian People's Republic against the Bolsheviks. The conflict can be viewed within the framework of the Southern Front of the Russian Civil War of 1917–1922, as well as the closing stage of the Eastern Front of World War I.

The occupation of the Ruhr (German: Ruhrbesetzung) was the period from 11 January 1923 to 25 August 1925 when French and Belgian troops occupied the Ruhr region of Germany. The occupation of the heavily industrialized Ruhr district came in response to Germany's repeated defaults on the reparations payments required under the terms of the Treaty of Versailles. The French and Belgians intended to force Germany to supply the coal and other raw materials that were part of the reparations. With the support of the German government, civilians in the area engaged in passive resistance and civil disobedience which largely shut down the economy of the region. Acts of sabotage and retaliation took place as well. An estimated 137 civilians were killed and 600 injured during the occupation. The ongoing economic crisis in Germany worsened considerably as a result of the occupation. The government paid for its support of idled workers and businesses primarily by printing paper money. This contributed to the hyperinflation that brought major hardships to Germans across the country. After Germany stabilized its currency in late 1923, France and Belgium, facing economic and international pressures of their own, accepted the 1924 Dawes Plan drawn up by an international team of experts. It restructured and lowered Germany's war reparations payments and led to France and Belgium withdrawing their troops from the Ruhr by August 1925. The occupation of the Ruhr contributed to the growth of radical right-wing movements in Germany. Adolf Hitler and the Nazi Party used the occupation as part of their justification for the Beer Hall Putsch of November 1923, which brought them wide public attention for the first time.

George Kelly Barnes (July 18, 1895 – July 18, 1954), better known by his nickname Machine Gun Kelly, was an American gangster from Memphis, Tennessee, active during the Prohibition era. His nickname came from his favorite weapon, a Thompson submachine gun. He is best known for the kidnapping of oil tycoon and businessman Charles F. Urschel in July 1933, from which he and his gang collected a $200,000 ransom (equivalent to $4.96 million in 2026). Urschel had collected and left considerable evidence that assisted the subsequent investigation by the Federal Bureau of Investigation (FBI), which eventually led to Kelly's arrest in Memphis on September 26, 1933. His crimes also included bootlegging and armed robbery.

The Spanish Civil War (Spanish: guerra civil española) was fought in Spain from 1936 to 1939 between the Republicans and the Nationalist rebels. Republicans loyal to the left-leaning Popular Front government of the Second Spanish Republic included socialists, anarchists, communists, and separatists, supported by the Soviet Union. The opposing Nationalists were an alliance of Falangists, monarchists, conservatives, and traditionalists, who established the military-led Spanish State and were directly aided by an intervention from Fascist Italy and participation of Nazi Germany. Due to the international political climate at the time, the war was variously viewed as class struggle, religious struggle, or struggle between republican democracy and dictatorship, revolution and counterrevolution, or communism and fascism. The Nationalists won the war in early 1939, and ruled Spain until Franco's death in November 1975. The war began after the partial failure of the coup d'état of July 1936 against the Popular Front government by a group of generals of the Spanish Republican Armed Forces. They were supported by right-wing groups including the Christian traditionalist party CEDA; monarchists, including both the opposing Alfonsists and the religious conservative Carlists; and the Falange Española de las JONS, a fascist political party. However, rebelling units in almost all important cities did not gain control, leaving Spain militarily and politically divided. The Nationalists were initially led by a military junta, until General Francisco Franco was appointed supreme leader on 1 October 1936 of what he called the Spanish State. The rebellion was countered by the arming of left-wing social movements and parties, and the formation of militias. This led to rapid socioeconomic and political transformation in the Republican zone, referred to as the Spanish Revolution. The Nationalist forces received munitions, soldiers, and air support from Fascist Italy which conducted a large-scale intervention and Nazi Germany which sent its Condor Legion, while the Republican government received support from the Soviet Union and Mexico. Other countries, such as the United Kingdom, France, and the United States, continued to recognise the Republican government, but followed official policies of non-intervention. Despite this, tens of thousands of citizens from non-interventionist countries directly participated in the conflict, mostly in the pro-Republican International Brigades. Franco gradually emerged as the primary leader of the Nationalists, becoming the dictator of the Spanish State by 1937 and co-opting Falangism, gaining recognition as a fascist leader. The Nationalists advanced from their strongholds in the south and west, capturing most of Spain's northern coastline in 1937 and besieging Madrid. After much of Catalonia was captured in 1938 and 1939 and Madrid was cut off from Barcelona, the Republican military position became hopeless. On 5 March 1939, in response to allegedly increasing communist dominance of the Republican government and the deteriorating military situation, Colonel Segismundo Casado led a military coup against the Republican government, intending to seek peace with the Nationalists. These peace overtures, however, were rejected by Franco. Following internal conflict between Republican factions in Madrid in the same month, Franco entered the capital and declared victory on 1 April 1939. Hundreds of thousands of those associated with the Republicans fled Spain, mostly to refugee camps in southern France; many of those who stayed were persecuted by the victorious Nationalists. The war became notable for the passion and political division it inspired worldwide, and for the many atrocities that occurred. Organised purges occurred in territory captured by Franco's forces to consolidate power. Mass executions took place in areas controlled by the Republicans, with the participation of local authorities varying by location.

The Holocaust, known in Hebrew as the Shoah, was the genocide of European Jews during World War II. From 1941 to 1945, Nazi Germany and its collaborators systematically murdered around six million Jews across German-occupied Europe, approximately two-thirds of Europe's Jewish population. The murders were committed primarily through mass shootings across Eastern Europe and poison gas chambers in extermination camps, chiefly Auschwitz-Birkenau, Treblinka, Belzec, Sobibor, Chełmno and Majdanek death camps in occupied Poland. Concurrent Nazi persecutions killed millions of other non-Jewish civilians and prisoners of war (POWs); the term Holocaust is sometimes used to include the murder and persecution of non-Jewish groups, such as the Romani and Soviet POWs.

The Korean War (25 June 1950 – 27 July 1953) was an armed conflict fought on the Korean Peninsula between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was supported by China and the Soviet Union, while South Korea was supported by the United Nations led by the United States under the auspices of the United Nations Command (UNC). After the end of World War II in 1945, Korea, which had been a Japanese colony for 35 years, was divided by the Soviet Union and the United States into two occupation zones at the 38th parallel, with plans for a future independent state. The zones formed their own governments in 1948 due to political disagreements. North Korea was led by Kim Il Sung in Pyongyang, and South Korea by Syngman Rhee in Seoul; both claimed to be the sole legitimate government of all of Korea. Both sides engaged in extensive border clashes while Rhee's government suppressed communist uprisings at Jeju and Yeosu-Suncheon. On 25 June 1950, North Korea's Korean People's Army (KPA) launched an invasion of South Korea. In the absence of the Soviet Union's representative, the UN Security Council denounced the invasion, calling on member states to help repel the invasion. UN forces under the unified command comprised 21 countries, with the US providing around 90% of military personnel. On 27 June 1950 President Harry S. Truman ordered US air and sea forces to aid South Korea. Seoul was captured by the KPA on 28 June, and by early August, the Republic of Korea Army (ROKA) and its allies were nearly defeated, holding onto only the Pusan Perimeter in the peninsula's southeast. On 15 September, UN forces landed at Inchon near Seoul, cutting off KPA troops and supply lines. UN forces broke out from the perimeter on 18 September, recaptured Seoul, and invaded North Korea in October, capturing Pyongyang and advancing towards the Yalu River (border with China). On 19 October, the Chinese People's Volunteer Army (PVA) crossed the Yalu and entered the war on the side of the North. UN forces retreated from North Korea in December, following the PVA's first and second offensive. Communist forces captured Seoul again in January 1951 before losing it to a UN counter-offensive two months later. After an abortive Chinese spring offensive, UN forces retook territory roughly up to the 38th parallel. Armistice negotiations began in July 1951, but dragged on as the fighting became a war of attrition and the North suffered devastating damage from UN bombing, destroying virtually all of North Korea's major cities. Combat ended on 27 July 1953 with the signing of the Korean Armistice Agreement, which allowed the exchange of prisoners and created a 4-kilometre wide (2.5 mile) Demilitarized Zone (DMZ) along the frontline, with a Joint Security Area at Panmunjom. The industrial warfare was defined by armored offensives, with the North's initial invasion and later by UN forces, tunnel warfare by Chinese forces, and the first large jet aircraft battles. The conflict caused around one million military deaths and an estimated 1.5 million to 3 million civilian deaths. Alleged war crimes include the mass killing of alleged communists by South Korea, the Seoul National University Hospital massacre by North Korea, and the carpet bombing of North Korea by the UNC. North Korea became one of the most heavily bombed countries in history. No peace treaty has been signed; the Korean conflict remains a frozen conflict, which has occasionally flared, such as in the 1966–1969 DMZ Conflict.

Rationing was introduced temporarily by the British government several times during the 20th century, during and immediately after a war.

Tōya Maru (洞爺丸) was a Japanese train ferry constructed by Japanese National Railways (JNR) which sank during Typhoon Marie, known locally as the Tōya Maru Typhoon, in the Tsugaru Strait between the Japanese islands of Hokkaidō and Honshū on September 26, 1954. JNR announced in September 1955 that 1,153 people aboard were killed in the accident. However, the exact number of fatalities remains unknown because some victims managed to obtain passage on the ship at the last minute, and others canceled their tickets just before the incident occurred. Fatalities were later reported as up to 1,170 passengers and crew.

Typhoon Vera, also known as the Isewan Typhoon , was an exceptionally intense tropical cyclone that struck Japan in September 1959, becoming the strongest and deadliest typhoon on record to make landfall on the country, as well as the only one to do so as a Category 5 equivalent storm. The storm's intensity resulted in catastrophic damage of unparalleled severity and extent, and was a major setback to the Japanese economy, which was still recovering from World War II. In the aftermath of Vera, Japan's disaster management and relief systems were significantly reformed, and the typhoon's effects would set a benchmark for future storms striking the country.

During presidential election campaigns in the United States, it has become customary for the candidates to engage in one or more debates. The topics discussed in the debate are often the most controversial issues of the time, and arguably elections have been nearly decided by these debates. Candidate debates are not constitutionally mandated, but they are now considered an intrinsic part of the election process. The debates are targeted mainly at undecided voters; those who tend not to be partial to any political ideology or party.

Air Caribbean Flight 309 was a domestic, non-scheduled airline flight by Puerto Rican airline Air Caribbean, which on Tuesday, September 26th, 1978, crashed as it was preparing to land at Luis Muñoz Marín International Airport in San Juan, after a flight from Ramey Air Force Base in Aguadilla, killing all six occupants of the aircraft and injuring several customers of a Barrio Obrero bar into which the airplane fell.

The Oktoberfest bombing was a far-right terrorist attack. On 26 September 1980, 13 people were killed and more than 200 injured by the explosion of an improvised explosive device (IED) at the main entrance of the Oktoberfest festival in Munich, West Germany. The bombing was attributed to the right-wing extremist and geology student Gundolf Köhler, who was instantly killed in the attack as the bomb exploded prematurely.

Soyuz 7K-ST No.16L, sometimes known as Soyuz T-10a or Soyuz T-10-1, was an unsuccessful Soyuz mission intended to visit the Salyut 7 space station, which was occupied by the Soyuz T-9 crew. However, it never finished its launch countdown; the launch vehicle was destroyed on the launch pad by fire on 26 September 1983. The launch escape system of the Soyuz spacecraft fired six seconds before the launch vehicle exploded, saving the crew. This is the only time a launch escape system has been fired before launch with a crew aboard.

The handover of Hong Kong from the United Kingdom of Great Britain and Northern Ireland to the People's Republic of China occurred at midnight on 1 July 1997. This event ended 156 years of British rule, dating back to the capture of Hong Kong Island in 1841 during the First Opium War.

The Nigerian Air Force (NAF) is the air branch of the Nigerian Armed Forces. It is the youngest branch of the Nigerian military, established four years after the nation became independent. As at 2021, the air force is one of the largest in Africa, consisting of over 18,000 personnel. Some of its popular aircraft include the Chengdu F-7s, Dassault-Dornier Alpha Jets, JF-17 Thunder, T129 Atak, Agusta Westland 109, Eurocopter EC135 and Embraer EMB 314 Super Tucano.

The Yakovlev Yak-40 is a regional jet designed in Soviet Union by Yakovlev. The trijet's maiden flight was in 1966, and it was in production from 1967 to 1981. It was introduced to service in 1968, with export models following in 1970.

Garuda Indonesia is the flag carrier of Indonesia, headquartered at Soekarno–Hatta International Airport near Jakarta. A successor of KLM Interinsulair Bedrijf, it is a member of SkyTeam airline alliance, operating scheduled flights to a number of destinations across Asia, Europe, and Australia from its hubs, focus cities, as well as other cities for Hajj.

The 1997 Umbria and Marche earthquakes occurred in the regions of Umbria and Marche, central Italy over a period of several months from September 1997 to April 1998. It consisted of eight earthquakes with magnitudes greater than Mw 5. The first of the larger shocks, which measured Mw 5.7, occurred at 02:33 CEST on 26 September 1997. It was preceded by several foreshocks, beginning with a Mw 4.5 event on 3 September. A second and slightly larger shock occurred about nine hours later at 11:40 CEST, rated Mw 6.0. The epicentres of first two larger earthquakes were in Annifo. The shaking associated with first two larger shocks was estimated at VIII (Severe) and X (Extreme) on the Mercalli intensity scale, respectively.

Anti-capitalist Protests in Prague took place during the International Monetary Fund (IMF) and World Bank summit on September 27, 2000, in Prague, capital of the Czech Republic.

MS Express Samina was a French-built RoPax ferry that struck the charted Portes Islets rocks in the Bay of Parikia off the coast of Paros island in the central Aegean Sea on 26 September 2000. The accident resulted in 81 deaths and the loss of the ship. The cause of the accident was crew negligence, for which several members were found criminally liable.

MV Le Joola was a Senegalese government-owned roll-on/roll-off ferry that capsized off the coast of The Gambia on 26 September 2002, with 1,863 deaths and 64 survivors. The majority of passengers were Senegalese and French, including 854 to 923 French-Senegalese dual nationals on board. It is thought to be the third-worst peacetime disaster in maritime history, and the worst in the 21st century.

Typhoon Ketsana, known in the Philippines as Tropical Storm Ondoy was a catastrophic tropical cyclone that caused extensive damages across Southeast Asia, particularly in the Philippines and Vietnam. It is both the second deadliest and costliest typhoon of the 2009 Pacific typhoon season, with at least $1.15 billion in damages, trailing behind Morakot with damages worth $6.2 billion, and 921 fatalities.

The 2010 Philippine Bar exam bombing occurred on Taft Avenue near De La Salle University (DLSU), located in Malate, Manila, Philippines, on September 26, 2010, at 5:05 pm PST, a few minutes after Philippine Bar examinees began exiting DLSU. A Mk2 grenade was thrown at a group of Alpha Phi Beta members from San Beda College. They were standing near Tau Gamma Phi members, who police believed were the real target of the explosive. This resulted in injuries to 47 people, including two who required amputations.

On September 26, 2014, forty-three male students from the Ayotzinapa Rural Teachers' College disappeared after being forcibly abducted in Iguala, Guerrero, Mexico, in what has been called one of Mexico's most infamous human rights cases. They were allegedly taken into custody by local policemen from Iguala and Cocula in collusion with organized crime, with later evidence implicating the Mexican Army. Officials have concluded there is no indication the students are alive, but as of 2025, only three students' remains have been identified and their deaths confirmed.

On 26 September 2022, a mass shooting occurred at a school in Izhevsk, Udmurtia, Russia. Eighteen people were killed and twenty-three others were wounded before the gunman, identified as Artyom Kazantsev committed suicide.

Hurricane Helene was a powerful and devastating tropical cyclone that caused widespread catastrophic damage and numerous fatalities across the Southeastern United States in late September 2024. It was the strongest hurricane on record to strike the Big Bend region of Florida, the deadliest Atlantic hurricane since Hurricane Maria in 2017, and the deadliest to strike the mainland U.S. since Hurricane Katrina in 2005.