June 17, 1462: Vlad III the Impaler attempts to assassinate Mehmed II (The Night Attack at Târgovişte), forcing him to retreat from Wallachia.

June 18, 1815: Napoleonic Wars: The Battle of Waterloo results in the defeat of Napoleon Bonaparte by the Duke of Wellington and Gebhard Leberecht von Blücher forcing him to abdicate the throne of France for the second and last time.

June 19, 1862: The U.S. Congress prohibits slavery in United States territories.

June 20, 451: Battle of Chalons: Flavius Aetius' battles Attila the Hun. After the battle, which was inconclusive, Attila retreats, causing the Romans to interpret it as a victory.

June 21, 1945: World War II - The Battle of Okinawa ends when the organized resistance of Imperial Japanese Army forces collapses in the Mabuni area on the southern tip of the main island.

June 22, 1940:  World War II - France is forced to sign the Second Compiègne armistice with Germany, in the same railroad car which the Germans used to sign the Treaty of Versailles.

June 23, 1532: Henry VIII of England and Francis I of France sign a secret treaty against Emperor Charles V, Holy Roman Emperor.

June 24, 217 BC: The Romans, led by Gaius Flaminius, are ambushed and defeated by Hannibal at the Battle of Lake Trasimene.

June 25, 1678:  Venetian Elena Cornaro Piscopia is the first woman awarded a doctorate of philosophy when she graduates from the University of Padua.

June 26, 1409: Western Schism - The Roman Catholic Church is led into a double schism as Petros Philargos is crowned Pope Alexander V after the Council of Pisa, joining Pope Gregory XII in Rome and Pope Benedict XII in Avignon.

June 27, 1950: The United States decides to send troops to fight in the Korean War.

June 28, 1838: Coronation of Queen Victoria of the United Kingdom.

June 29, 1927: The Bird of Paradise, a U.S. Army Air Corps Fokker tri-motor, completes the first transpacific flight, from the mainland United States to Hawaii.

June 30, 1934: The Night of the Long Knives, Adolf Hitler's violent purge of his political rivals in Germany, takes place.