Dec. 19, 1998 President Clinton is impeached by the House for lying under oath about his affair with Monica Lewinsky but is later acquitted by the Senate.
Dec. 20, 1957 Elvis Presley is drafted by the U.S. Army; he serves for 18 months in Germany.
Dec. 21, 1988 Pan Am Flight 103 explodes over Lockerbie, Scotland, killing 189 Americans.
Dec. 23, 1888 Dutch painter Vincent van Gogh chops off his left earlobe after suffering from depression.
Dec. 24, 1979 The Soviet Union invades Afghanistan, starting a war that would last a decade.