The US army enlisted its first female colonel, Julia Flikke.
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The first major revolt of the 1848-1849 German revolutions began in Vienna.
Astronomer William Herschel first observed Uranus.
Prolific killer John Wayne Gacy was given the death sentence for the murder of 33 young men and boys.
Apollo 9 and its crew returned to Earth after a 10-day mission orbiting Earth.
Pope Leo XII renewed the prohibition of members of the Catholic Church from joining the Freemasons.
