Deaths on August 25

Florimond Claude, Comte de Mercy-Argenteau, Belgian-Austrian diplomat (b. 1727)

Florimond Claude, comte de Mercy-Argenteau (20 April 1727 – 25 August 1794) was an Austrian diplomat.

27 Mar

Original six frigates of the United States Navy
The United States Government establishes a permanent navy and authorizes the building of six frigates.
8 May

French Revolution
Branded a traitor during the Reign of Terror by revolutionists, French chemist Antoine Lavoisier, who was also a tax collector with the Ferme générale, is tried, convicted and guillotined in one day in Paris.
26 Jun

Battle of Fleurus (1794)
French Revolutionary Wars: Battle of Fleurus marked the first successful military use of aircraft.
28 Jul

Maximilien Robespierre
French Revolution: Maximilien Robespierre and Louis Antoine de Saint-Just are executed by guillotine in Paris, France.
7 Aug

Whiskey Rebellion
U.S. President George Washington invokes the Militia Acts of 1792 to suppress the Whiskey Rebellion in western Pennsylvania.