The three generals of the Battle of Waterloo had the same watch supplier

At the Battle of Waterloo in 1815, Napoleon used a pocket watch by Abraham-Louis Breguet. The watchmaker from Neuchâtel supplied not only the French general, but also his opponents. The Duke of Wellington and Field Marshal Gebhard Leberecht von Blücher also made their decisions with Breguet timepieces in their pockets. When selling the chronometers, the Neuchâtel native likely had the lucrative business in mind rather than Swiss neutrality.

Napoleon was a Breguet fan, by the way: He owned a total of three of the watchmaker's clocks. However, only one carriage clock has survived, and is now in the possession of the Swiss National Museum.

Abraham-Louis Breguet (1747-1823)

Napoleon (1769 - 1821)

Breguet carriage clock, 1796, fire-gilt bronze, made
by Abraham-Louis Breguet

Source: blog.nationalmuseum.ch