1818 Napoleon Bonaparte bids emotional farewell to his old guard at Palace of Fontainebleau.
1899 David Beatty is appointed executive officer of the HMS Barfleur, a small battleship and flagship of the China Station.
1918 Manfred von Richthofen, aka The Red Baron, shoots down his 79th and 80th victims marking his final victories before his death the following day.
1934 Heinrich Himmler becomes inspector Prussian secret state police.
1974 'The Troubles', the Northern Ireland conflict between republican and loyalist paramilitaries, British security forces, and civil rights groups, claims its 1000th victim.
1999 Columbine High School massacre: Eric Harris and Dylan Klebold kill 13 people and injure 24 others before committing suicide at Columbine High School, Colorado.
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