American Revolutionary War: Spanish troops capture the British-held island of Roatán.
American Civil War: During the Red River Campaign, Union troops reach Alexandria, Louisiana.
World War I: A German auxiliary cruiser is sunk in the Action of 16 March 1917.
World War II: The Battle of Iwo Jima ended, but small pockets of Japanese resistance persisted.
The Ford Motor Company produces its 50 millionth automobile, the Thunderbird, averaging almost a million cars a year since the company's founding.
Vietnam War: My Lai Massacre occurs; between 347 and 500 Vietnamese villagers (men, women, and children) are killed by American troops.
General Motors produces its 100 millionth automobile, the Oldsmobile Toronado.
In Egypt, a 4,400-year-old mummy is found near the Pyramid of Cheops.
Israel officially hands over Jericho to Palestinian control.