On this date in history:
In 1623, in the first breach-of-promise lawsuit in the United States, the Rev. Greville Pooley sued Cicely Jordan in Charles City, Va., for jilting him for another man.
In 1775, the Continental Congress established the Army as the first U.S. military service.
In 1777, the Stars and Stripes became the national U.S. flag.
In 1933, the first Superman comic book -- Action Comic No. 1 -- was published.
In 1940, German troops marched down Paris' Champs-Élysées as Allied forces abandoned the French capital.
In 1951, Univac I, the world's first commercial computer, designed for the U.S. Census Bureau, was introduced.
In 1954, the phrase "under God" was formally added to U.S. Pledge of Allegiance.
In 1985, Shiite Muslim gunmen highjacked TWA Flight 847 carrying 153 passengers and crew from Athens to Rome. The ordeal ended 17 days later in Beirut, where one of the hostages, a U.S. sailor, was killed.
In 1990, flash floods killed at least 26 people and damaged or destroyed more than 800 homes in four eastern Ohio counties.
In 1998, the Chicago Bulls won their sixth NBA title in eight years and third in a row, defeating the Utah Jazz in the championship series.
In 2002, U.S. Roman Catholic Church leaders adopted new rules for all dioceses calling for removal from active service of any priest found to have abused a minor and for the reporting of accusations to civil authorities.
In 2003, the Czech Republic voted overwhelmingly to join the European Union.
In 2008, heavy rains flooded Iowa and other Midwestern states, claiming at least 24 lives and damaging millions of acres of corn and soybeans.
In 2013, Hassan Rouhani was elected president of Iran.
In 2014, former NFL running back Rodney Thomas (Houston Oilers, Tennessee Titans, Atlanta Falcons) died in Groveton, Texas, of a heart attack at the age of 41.
In 2017, Ireland's parliament elected Leo Varadkar, the country's youngest and first openly gay prime minister.
In 2017, a fire at Grenfell Tower, a high-rise apartment building in west London, killed nearly 80 people.
In 2017, a gunman opened fire at a Republican team charity baseball practice in suburban Washington, D.C, seriously injuring House Republican Whip Steve Scalise of Louisiana. The shooting also left three others injured by gunfire and two more sustained injuries trying to flee.