Template:Selected anniversaries/April 25
1598: Donnybrook breaks out over who cheated at card game, leading to murder, and, eventually, crimes against mathematical constants.
1599: Oliver Cromwell born. He will become a military and political leader and later Lord Protector of the Commonwealth of England, Scotland, and Ireland.
1959: Army research laboratories convert modern plowshares into ancient swords. Military contractors call technique "Astonishing breakthrough."
1960: The United States Navy submarine USS Triton completes Operation Sandblast, the first submerged circumnavigation of the globe.
Woodward and Burroughs announce Initial Public Offering of Extract of Radium, expect to raise "several billion dollars worth of computational power."
1983: Pioneer 10 travels beyond Pluto's orbit.
1984: Synthetic organism Ultravore consumes two hundred and fifty kilograms of Clandestiphrine with no apparent ill effect.