1814January 1 – War of the Sixth Coalition – The Royal Prussian Army led by Gebhard Leberecht von Blücher crosses the Rhine. January 3 War of the Sixth Coalition – Siege of Cattaro: French garrison surrenders to the British after ten days of bombardment. War of the Sixth Coalition – Siege of Metz: Allied armies lay siege to the French city and fortress of Metz. January 5 – Mexican War of Independence – Battle of Puruarán: Spanish Royalists defeat Mexican Rebels.
1821January 21 – Peter I Island in the Antarctic is first sighted, by Fabian Gottlieb von Bellingshausen. January 26 – Congress of Laibach convenes in Laibach to deal with outstanding international issues, particularly the outbreak of a revolution in southern Italy. January 28 – Alexander Island, the largest in Antarctica, is first discovered by Fabian Gottlieb von Bellingshausen. February 9 – Columbian College in the District of Columbia is chartered by President James Monroe (it becomes George Washington University).
August 26683 – Yazid I's army kills 11,000 people of Medina including notable Sahabas in Battle of al-Harrah. 1071 – The Seljuq Turks defeat the Byzantine army at the Battle of Manzikert, and soon gain control of most of Anatolia. 1278 – Ladislaus IV of Hungary and Rudolf I of Germany defeat Ottokar II of Bohemia in the Battle on the Marchfeld near Dürnkrut in (then) Moravia. 1303 – Chittorgarh falls to the Delhi Sultanate. 1346 – At the Battle of Crécy, an English army easily defeats a French one twice its size.
April 4503 BC – Roman consul Agrippa Menenius Lanatus celebrates a triumph for a military victory over the Sabines. 190 – Dong Zhuo has his troops evacuate the capital Luoyang and burn it to the ground. 611 – Maya king Uneh Chan of Calakmul sacks rival city-state Palenque in southern Mexico. 801 – King Louis the Pious captures Barcelona from the Moors after a siege of several months. 1268 – A five-year Byzantine–Venetian peace treaty is concluded between Venetian envoys and Emperor Michael VIII Palaiologos.
August 20AD 14 – Agrippa Postumus, maternal grandson of the late Roman emperor Augustus, is mysteriously executed by his guards while in exile. 636 – Battle of Yarmouk: Arab forces led by Khalid ibn al-Walid take control of the Levant away from the Byzantine Empire, marking the first great wave of Muslim conquests and the rapid advance of Islam outside Arabia. 917 – Battle of Acheloos: Tsar Simeon I of Bulgaria decisively defeats a Byzantine army. 1083 – Canonization of the first King of Hungary, Saint Stephen and his son Saint Emeric celebrated as a National Day in Hungary.
March 7161 – Marcus Aurelius and L. Commodus (who changes his name to Lucius Verus) become joint emperors of Rome on the death of Antoninus Pius. 1138 – Konrad III von Hohenstaufen was elected king of Germany at Coblenz in the presence of the papal legate Theodwin. 1277 – The University of Paris issues the last in a series of condemnations of various philosophical and theological theses. 1573 – A peace treaty is signed between the Ottoman Empire and the Republic of Venice, ending the Ottoman–Venetian War and leaving Cyprus in Ottoman hands.
