August 26

683 – 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. 1444 – Battle of St. Jakob an der Birs: A vastly outnumbered force of Swiss Confederates is defeated by the Dauphin Louis (future Louis XI of France) and his army of 'Armagnacs' near Basel. 1542 – Francisco de Orellana crosses South America from Guayaquil on the Pacific coast to the mouth of the Amazon River on the Atlantic coast. 1642 – Dutch–Portuguese War: Second Battle of San Salvador: The Dutch force the Spanish garrison at San Salvador (modern day Keelung, Taiwan) to surrender, ending the short-lived Spanish colony on Formosa and replacing it with a new Dutch administration. 1648 – The Fronde: First Fronde: In the wake of the successful Battle of Lens, Cardinal Mazarin, Chief Minister of France, suddenly orders the arrest of the leaders of the Parlement of Paris, provoking the rest of Paris to break into insurrection and barricade the streets the next day. 1748 – The first Lutheran denomination in North America, the Pennsylvania Ministerium, is founded in Philadelphia. 1767 – Jesuits all over Chile are arrested as the Spanish Empire suppresses the Society of Jesus. 1768 – Captain James Cook sets sail from England on board . 1778 – The first recorded ascent of Triglav, the highest mountain in Slovenia. 1789 – The Declaration of the Rights of Man and of the Citizen is approved by the National Constituent Assembly of France. 1791 – John Fitch is granted a United States patent for the steamboat. 1810 – The former viceroy Santiago de Liniers of the Viceroyalty of the Río de la Plata is executed after the defeat of his counter-revolution.