Events

• 221 – Liu Bei, Chinese warlord, proclaims himself emperor of Shu Han, the successor of the Han dynasty.
• 392 – Emperor Valentinian II is assassinated while advancing into Gaul against the Frankish usurper Arbogast. He is found hanging in his residence at Vienne.
• 1525 – Insurgent peasants led by Anabaptist pastor Thomas Müntzer were defeated at the Battle of Frankenhausen, ending the German Peasants’ War in the Holy Roman Empire.
• 1536 – Anne Boleyn, Queen of England, stands trial in London on charges of treason, adultery and incest; she is condemned to death by a specially-selected jury.
• 1602 – Cape Cod sighted by English navigator Bartholomew Gosnold.
• 1648 – The Peace of Münster is ratified, by which Spain acknowledges Dutch sovereignty.
• 1791 – French Revolution: Maximilien Robespierre proposes the Self-denying Ordinance.
• 1849 – The Sicilian revolution of 1848 is finally extinguished.
• 1850 – The Arana-Southern Treaty is ratified, ending “the existing differences” between Great Britain and Argentina.
• 1864 – American Civil War: Battle of New Market, Virginia: Students from the Virginia Military Institute fight alongside the Confederate army to force Union General Franz Sigel out of the Shenandoah Valley.
• 1905 – The city of Las Vegas founded in Nevada, United States.
• 1911 – More than 300 Chinese immigrants are killed in the Torreón massacre when the forces of the Mexican Revolution led by Emilio Madero take the city of Torreón from the Federales.
• 1918 – The Finnish Civil War ends when the Whites took over Fort Ino, a Russian coastal artillery base on the Karelian Isthmus, from the Russian troops.
• 1919 – Greek occupation of Smyrna. During the occupation, the Greek army kills or wounds 350 Turks; those responsible are punished by Greek commander Aristides Stergiades.
• 1932 – In an attempted coup d’état, the Prime Minister of Japan Inukai Tsuyoshi is assassinated.
• 1933 – All military aviation organisations within or under the control of the RLM of Germany were officially merged in a covert manner to form its Wehrmacht military’s air arm, the Luftwaffe.
• 1940 – USS Sailfish is recommissioned. It was originally the USS Squalus.
• 1940 – World War II: The Battle of the Netherlands: After fierce fighting, the poorly trained and equipped Dutch troops surrender to Germany, marking the beginning of five years of occupation.
• 1940 – Richard and Maurice McDonald open the first McDonald’s restaurant.
• 1941 – First flight of the Gloster E.28/39 the first British and Allied jet aircraft.
• 1942 – World War II: In the United States, a bill creating the Women’s Army Auxiliary Corps (WAAC) is signed into law.
• 1943 – Joseph Stalin dissolves the Comintern (or Third International).
• 1945 – World War II: The Battle of Poljana, the final skirmish in Europe is fought near Prevalje, Slovenia.
• 1948 – Following the expiration of The British Mandate for Palestine, the Kingdom of Egypt, Transjordan, Lebanon, Syria, Iraq and Saudi Arabia invade Israel thus starting the 1948 Arab-Israeli War.
• 1957 – At Malden Island in the Pacific Ocean, Britain tests its first hydrogen bomb in Operation Grapple.
• 1970 – President Richard Nixon appoints Anna Mae Hays and Elizabeth P. Hoisington the first female United States Army generals.
• 1972 – The Ryukyu Islands, under US military governance since its conquest in 1945, reverts to Japanese control.
• 1988 – Soviet-Afghan War: After more than eight years of fighting, the Soviet Army begins to withdraw 115,000 troops from Afghanistan.
• 1997 – The United States government acknowledges the existence of the “Secret War” in Laos and dedicates the Laos Memorial in honour of Hmong and other “Secret War” veterans.
• Army Day (Slovenia).
• Earliest date on which Armed Forces Day (United States) can fall, while 21 May is the latest; celebrated on the third Saturday of May.
• Independence Day (Paraguay), celebrates the independence of Paraguay from Spain in 1811. Celebrations for the anniversary of the independence begin on Flag Day, 14 May.
• International Conscientious Objectors Day.

People (Births)

• 1786 – Dimitris Plapoutas, Greek general and politician (d. 1864).
• 1803 – Juan Almonte, son of José María Morelos, was a Mexican soldier and diplomat who served as a regent in the Second Mexican Empire (1863-1864) (d. 1869).
• 1841 – Clarence Dutton, American commander and geologist (d. 1912).
• 1892 – Charles E. Rosendahl, American admiral (d. 1977).
• 1894 – Feg Murray, American hurdler and cartoonist (d. 1973).
• 1899 – Jean Étienne Valluy, French general (d. 1970).
• 1902 – Sigizmund Levanevsky, Soviet aircraft pilot of Polish origin (d. 1937).
• 1905 – Abraham Zapruder, American businessman and amateur photographer, filmed the Zapruder film (JFK’s motorcade sequence (d. 1970).
• 1925 – Carl Sanders, American soldier, pilot, and politician, 74th Governor of Georgia (d. 2014).
• 1949 – Frank L. Culbertson Jr., American captain, pilot, and astronaut.
• 1962 – Lisa Curry, Australian swimmer.
• 1970 – Ben Wallace, English captain and politician (Secretary of State for Defence).
• 1979 – Daniel Caines, English sprinter.

People (Deaths)

• 1585 – Niwa Nagahide, Japanese samurai (b. 1535).
• 1945 – Kenneth J. Alford, English soldier, bandmaster, and composer (b. 1881).
• 1954 – William March, American soldier and author (b. 1893).
• 1963 – John Aglionby, English-born Bishop of Accra and soldier (b. 1884).
• 2012 – Zakaria Mohieddin, Egyptian soldier and politician, 33rd Prime Minister of Egypt (b. 1918).