Emperor Napoleon III personally led the French army, but when he (and 100K men) were captured in the Battle of Sedan in 1870 it practically won Prussia the war.
https://en.wikipedia.org/wiki/Battle_of_Sedan
> after news hit Paris of Emperor Napoleon's III capture, his wife said "why didn't he kill himself?"
Emperor Napoleon III personally led the French army, but when he (and 100K men) were captured in the Battle of Sedan in 1870 it practically won Prussia the war.
https://en.wikipedia.org/wiki/Battle_of_Sedan
> after news hit Paris of Emperor Napoleon's III capture, his wife said "why didn't he kill himself?"