August 13

29 BC – Octavian holds the first of three consecutive triumphs in Rome to celebrate the victory over the Dalmatian tribes. 523 – John I becomes the new Pope after the death of Pope Hormisdas. 554 – Emperor Justinian I rewards Liberius for his service in the Pragmatic Sanction, granting him extensive estates in Italy. 582 – Maurice becomes Emperor of the Byzantine Empire. 900 – Count Reginar I of Hainault rises against Zwentibold of Lotharingia and slays him near present-day Susteren. 1099 – Raniero is elected as Pope Paschal II, who would become deeply entangled in the Investiture Controversy. 1516 – The Treaty of Noyon between France and Spain is signed. Francis I of France recognizes Charles's claim to Naples, and Charles V, Holy Roman Emperor, recognizes Francis's claim to Milan. 1521 – After an extended siege, forces led by Spanish conquistador Hernán Cortés capture Tlatoani Cuauhtémoc and conquer the Aztec capital of Tenochtitlan. 1532 – Union of Brittany and France: The Duchy of Brittany is absorbed into the Kingdom of France. 1536 – Buddhist monks from Kyoto, Japan's Enryaku-ji temple set fire to 21 Nichiren temples throughout Kyoto in what will be known as the Tenbun Hokke Disturbance. 1553 – Michael Servetus is arrested by John Calvin in Geneva, Switzerland as a heretic. 1624 – The French king Louis XIII appoints Cardinal Richelieu as prime minister. 1645 – Sweden and Denmark sign Peace of Brömsebro. 1650 – Colonel George Monck of the English Army forms Monck's Regiment of Foot, which will later become the Coldstream Guards. 1704 – War of the Spanish Succession: Battle of Blenheim: English and Imperial forces are victorious over French and Bavarian troops. 1779 – American Revolutionary War: The Royal Navy defeats the Penobscot Expedition with the most significant loss of United States naval forces prior to the attack on Pearl Harbor. 1792 – King Louis XVI of France is formally arrested by the National Tribunal, and declared an enemy of the people. 1806 – Battle of Mišar during the Serbian Revolution begins.