July 18477 BC – Battle of the Cremera as part of the Roman–Etruscan Wars. Veii ambushes and defeats the Roman army. 387 BC – Roman-Gaulish Wars: Battle of the Allia: A Roman army is defeated by raiding Gauls, leading to the subsequent sacking of Rome. 362 – Roman–Persian Wars: Emperor Julian arrives at Antioch with a Roman expeditionary force (60,000 men) and stays there for nine months to launch a campaign against the Persian Empire. 452 – Sack of Aquileia: After an earlier defeat on the Catalaunian Plains, Attila lays siege to the metropolis of Aquileia and eventually destroys it.
December 22AD 69 – Vespasian is proclaimed Emperor of Rome; his predecessor, Vitellius, attempts to abdicate but is captured and killed at the Gemonian stairs. 401 – Pope Innocent I is elected, the only pope to succeed his father in the office. 856 – Damghan earthquake: An earthquake near the Persian city of Damghan kills an estimated 200,000 people, the sixth deadliest earthquake in recorded history. 880 – Luoyang, eastern capital of the Tang dynasty, is captured by rebel leader Huang Chao during the reign of Emperor Xizong.
July 21356 BC – The Temple of Artemis in Ephesus, one of the Seven Wonders of the World, is destroyed by arson. 230 – Pope Pontian succeeds Urban I as the eighteenth pope. After being exiled to Sardinia, he became the first pope to resign his office. 285 – Diocletian appoints Maximian as Caesar and co-ruler. 365 – The 365 Crete earthquake affected the Greek island of Crete with a maximum Mercalli intensity of XI (Extreme), causing a destructive tsunami that affects the coasts of Libya and Egypt, especially Alexandria.
March 141074 – Battle of Mogyoród: Dukes Géza and Ladislaus defeat their cousin Solomon, King of Hungary, forcing him to flee to Hungary's western borderland. 1590 – Battle of Ivry: Henry of Navarre and the Huguenots defeat the forces of the Catholic League under Charles, Duke of Mayenne, during the French Wars of Religion. 1647 – Thirty Years' War: Bavaria, Cologne, France and Sweden sign the Truce of Ulm. 1663 – According to his own account, Otto von Guericke completes his book Experimenta Nova (ut vocantur) Magdeburgica de Vacuo Spatio, detailing his experiments on vacuum and his discovery of electrostatic repulsion.
September 12490 BC – Battle of Marathon: The conventionally accepted date for the Battle of Marathon. The Athenians and their Plataean allies defeat the first Persian invasion force of Greece. 372 – Sixteen Kingdoms: Jin Xiaowudi, age 10, succeeds his father Jin Jianwendi as Emperor of the Eastern Jin dynasty. 1213 – Albigensian Crusade: Simon de Montfort, 5th Earl of Leicester, defeats Peter II of Aragon at the Battle of Muret. 1229 – Battle of Portopí: The Aragonese army under the command of James I of Aragon disembarks at Santa Ponça, Majorca, with the purpose of conquering the island.
October 234004 BC – James Ussher's proposed creation date of the world according to the Bible. 42 BC – Liberators' civil war: Mark Antony and Octavian decisively defeat an army under Brutus in the second part of the Battle of Philippi, with Brutus committing suicide and ending the civil war. 425 – Valentinian III is elevated as Roman emperor at the age of six. 502 – The Synodus Palmaris, called by Gothic king Theoderic, absolves Pope Symmachus of all charges, thus ending the schism of Antipope Laurentius.
August 121099 – First Crusade: Battle of Ascalon Crusaders under the command of Godfrey of Bouillon defeat Fatimid forces led by Al-Afdal Shahanshah. This is considered the last engagement of the First Crusade. 1121 – Battle of Didgori: The Georgian army under King David IV wins a decisive victory over the famous Seljuk commander Ilghazi. 1164 – Battle of Harim: Nur ad-Din Zangi defeats the Crusader armies of the County of Tripoli and the Principality of Antioch.
June 29226 – Cao Rui succeeds his father as emperor of Wei. 1149 – Raymond of Poitiers is defeated and killed at the Battle of Inab by Nur ad-Din Zangi. 1194 – Sverre is crowned King of Norway, leading to his excommunication by the Catholic Church and civil war. 1444 – Skanderbeg defeats an Ottoman invasion force at Torvioll. 1457 – The Dutch city of Dordrecht is devastated by fire 1534 – Jacques Cartier is the first European to reach Prince Edward Island.
January 1049 BC – Julius Caesar crosses the Rubicon, signalling the start of civil war. 9 – The Western Han dynasty ends when Wang Mang claims that the divine Mandate of Heaven called for the end of the dynasty and the beginning of his own, the Xin dynasty. 69 – Lucius Calpurnius Piso Licinianus is appointed by Galba as deputy Roman Emperor. 236 – Pope Fabian succeeds Anterus to become the twentieth pope of Rome. 1072 – Robert Guiscard conquers Palermo in Sicily for the Normans.
January 19379 – Emperor Gratian elevates Flavius Theodosius at Sirmium to Augustus, and gives him authority over all the eastern provinces of the Roman Empire. 649 – Conquest of Kucha: The forces of Kucha surrender after a forty-day siege led by Tang dynasty general Ashina She'er, establishing Tang control over the northern Tarim Basin in Xinjiang. 1419 – Hundred Years' War: Rouen surrenders to Henry V of England, completing his reconquest of Normandy. 1511 – The Italian Duchy of Mirandola surrenders to the Pope.
