WHAT HAPPENED ON 20. AUGUST
Want to find out what all happened on 20. August

Agrippa Postumus, adopted son of the late Roman Emperor Augustus, is executed by his guards while in exile under mysterious circumstances. (20. August 14)

Battle of Yarmouk: Arab forces led by Khalid ibn al-Walid take control of Syria and Palestine away from the Byzantine Empire, marking the first great wave of Muslim conquests and the rapid advance of Islam outside Arabia. (20. August 636)

Battle of Acheloos: Tsar Simeon I of Bulgaria decisively defeats a Byzantine army. (20. August 917)

The foundation of the Hungarian state by Saint Stephen, celebrated as a National Day in Hungary. (20. August 1000)

Canonization of the first King of Hungary, Saint Stephen and his son Saint Emeric. (20. August 1083)

Pope Clement V pardons Jacques de Molay, the last Grand Master of the Knights Templar, absolving him of charges of heresy. (20. August 1308)

Konrad von Wallenrode becomes the 24th Hochmeister of the Teutonic Order. (20. August 1391)

The Second Battle of Olmedo takes places as part of a succession conflict between Henry IV of Castile and his half-brother Alfonso, Prince of Asturias. (20. August 1467)

Philosopher and general Wang Yangming defeats Zhu Chenhao, ending the Prince of Ning rebellion against the reign of the Ming Dynasty emperor Zhengde. (20. August 1519)

Former Grand Pensionary Johan de Witt and his brother Cornelis are brutally murdered by an angry mob in The Hague. (20. August 1672)

The first Siege of Pensacola comes to end with the failure of the British to capture Pensacola, Florida. (20. August 1707)

War of the Spanish Succession: a multinational army led by the Austrian commander Guido Starhemberg defeats the Spanish-Bourbon army commanded by Alexandre Maître, Marquis de Bay in the Battle of Saragossa. (20. August 1710)

The Spanish establish the Presidio San Augustin del Tucson in the town that became Tucson, Arizona. (20. August 1775)

Battle of Fallen Timbers – American troops force a confederacy of Shawnee, Mingo, Delaware, Wyandot, Miami, Ottawa, Chippewa, and Potawatomi warriors into a disorganized retreat. (20. August 1794)

Charles Darwin first publishes his theory of evolution through natural selection in The Journal of the Proceedings of the Linnean Society of London, alongside Alfred Russel Wallace's same theory. (20. August 1858)

President Andrew Johnson formally declares the American Civil War over. (20. August 1866)

Tchaikovsky's 1812 Overture debuts in Moscow, Russia. (20. August 1882)

The Great Fire of 1910 (also commonly referred to as the "Big Blowup" or the "Big Burn") occurs in northeast Washington, northern Idaho (the panhandle), and western Montana, burning approximately 3 million acres (12,000 km2). (20. August 1910)

World War I: German forces occupy Brussels. (20. August 1914)

The first commercial radio station, 8MK (now WWJ), begins operations in Detroit, Michigan. (20. August 1920)

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