September 1985 – Nerva, suspected of complicity of the death of Domitian, is declared emperor by Senate. The Senate then annuls laws passed by Domitian and orders his statues to be destroyed. 634 – Siege of Damascus: The Rashidun Arabs under Khalid ibn al-Walid capture Damascus from the Byzantine Empire. 1356 – Battle of Poitiers: An English army under the command of Edward the Black Prince defeats a French army and captures King John II. 1410 – End of the Siege of Marienburg: The State of the Teutonic Order repulses the joint Polish—Lithuanian forces.
February 23303 – Roman emperor Diocletian orders the destruction of the Christian church in Nicomedia, beginning eight years of Diocletianic Persecution. 532 – Byzantine emperor Justinian I lays the foundation stone of a new Orthodox Christian basilica in Constantinople – the Hagia Sophia. 628 – Khosrow II, last Sasanian shah of Iran, is overthrown. 705 – Empress Wu Zetian abdicates the throne, restoring the Tang dynasty. 1455 – Traditionally the date of publication of the Gutenberg Bible, the first Western book printed with movable type.
February 562 – Earthquake in Pompeii, Italy. 1576 – Henry of Navarre abjures Catholicism at Tours and rejoins the Protestant forces in the French Wars of Religion. 1597 – A group of early Japanese Christians are killed by the new government of Japan for being seen as a threat to Japanese society. 1783 – In Calabria, a sequence of strong earthquakes begins. 1810 – Peninsular War: Siege of Cádiz begins. 1818 – Jean-Baptiste Bernadotte ascends to the thrones of Sweden and Norway.
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.
December 291170 – Thomas Becket, Archbishop of Canterbury, is assassinated inside Canterbury Cathedral by followers of King Henry II; he subsequently becomes a saint and martyr in the Anglican Communion and the Catholic Church. 1503 – The Battle of Garigliano was fought between a Spanish army under Gonzalo Fernández de Córdoba and a French army commanded by Ludovico II, Marquess of Saluzzo. 1607 – According to John Smith, Pocahontas, daughter of Powhatan leader Wahunsenacawh, successfully pleads for his life after tribal leaders attempt to execute him.
September 1896 – Domitian, who has been conducting a reign of terror for the past three years, is assassinated as a result of a plot by his wife Domitia and two Praetorian prefects. 96 – Nerva is proclaimed Roman emperor after Domitian is assassinated. 324 – Constantine the Great decisively defeats Licinius in the Battle of Chrysopolis, establishing Constantine's sole control over the Roman Empire. 1048 – Battle of Kapetron between a combined Byzantine-Georgian army and a Seljuq army.
September 271066 – William the Conqueror and his army set sail from the mouth of the Somme river, beginning the Norman conquest of England. 1331 – The Battle of Płowce is fought, between the Kingdom of Poland and the Teutonic Order. The Poles are defeated but their leaders escape capture. 1422 – After the brief Gollub War, the Teutonic Knights sign the Treaty of Melno with Poland and Lithuania. 1529 – The Siege of Vienna begins when Suleiman I attacks the city. 1540 – The Society of Jesus (Jesuits) receives its charter from Pope Paul III.
May 29363 – The Roman emperor Julian defeats the Sasanian army in the Battle of Ctesiphon, under the walls of the Sasanian capital, but is unable to take the city. 1108 – Battle of Uclés: Almoravid troops under the command of Tamim ibn Yusuf defeat a Castile and León alliance under the command of Prince Sancho Alfónsez. 1167 – Battle of Monte Porzio: A Roman army supporting Pope Alexander III is defeated by Christian of Buch and Rainald of Dassel. 1176 – Battle of Legnano: The Lombard League defeats Emperor Frederick I.
January 31314 – Pope Sylvester I is consecrated, as successor to the late Pope Miltiades. 1208 – The Battle of Lena takes place between King Sverker II of Sweden and his rival, Prince Eric, whose victory puts him on the throne as King Eric X of Sweden. 1504 – The Treaty of Lyon ends the Italian War, confirming French domination of northern Italy, while Spain receives the Kingdom of Naples. 1578 – Eighty Years' War and Anglo-Spanish War: The Battle of Gembloux is a victory for Spanish forces led by Don John of Austria over a rebel army of Dutch, Flemish, English, Scottish, German, French and Walloons.
April 21753 BC – Romulus founds Rome (traditional date). 43 BC – Battle of Mutina: Mark Antony is again defeated in battle by Aulus Hirtius, who is killed. Antony fails to capture Mutina and Decimus Brutus is murdered shortly after. 900 – The Laguna Copperplate Inscription (the earliest known written document found in what is now the Philippines): the Commander-in-Chief of the Kingdom of Tondo, as represented by the Honourable Jayadewa, Lord Minister of Pailah, pardons from all debt the Honourable Namwaran and his relations.
