On this date

In 1794, French revolutionary leader Maximilien Robespierre was overthrown and placed under arrest; he was executed the following day.

In 1861, Union Maj. Gen. George B. McClellan took command of the Army of the Potomac during the Civil War.

In 1866, Cyrus W. Field finished laying out the first successful underwater telegraph cable between North America and Europe (a previous cable in 1858 burned out after only a few weeks’ use).

In 1953, the Korean War armistice was signed at Panmunjom, ending three years of fighting.

In 1960, Vice President Richard M. Nixon was nominated for president on the first ballot at the Republican National Convention in Chicago. In 1967, President Lyndon B. Johnson appointed the Kerner Commission to assess the causes of urban rioting, the same day black militant H. Rap Brown told a press conference in Washington that violence was “as American as cherry pie.”

In 1974, the House Judiciary Committee voted 27-11 to adopt the first of three articles of impeachment against President Richard Nixon, charging he had personally engaged in a course of conduct designed to obstruct justice in the Watergate case.

In 1976, Air Force veteran Ray Brennan became the first person to die of so-called “Legionnaire’s Disease” following an American Legion convention in Philadelphia.

In 1980, on day 267 of the Iranian hostage crisis, the deposed Shah of Iran died at a military hospital outside Cairo, Egypt, at age 60.

In 1996, terror struck the Atlanta Olympics as a pipe bomb exploded at Centennial Olympic Park, directly killing one person and injuring 111. (Anti-government extremist Eric Rudolph later pleaded guilty to the bombing, exonerating security guard Richard Jewell, who had been wrongly suspected.)