Marshal Ney, The Bravest of the Brave by A. Hilliard Atteridge
Joachim Murat, Napoleon's Great Commander of Cavalry by A. Hilliard Atteridge
I read both of these at the same time, bouncing back and forth in order to stay chronological. Both were written at the end of 1890s, and despite some dry writing I got exactly what I wanted out of both. I learned a lot about the personalities of Ney and Murat and was fascinated by their polar opposite nature. Ney was a Strasbourger whose soul was as German as his mother-tongue; cold and disciplined. Murat was a Gascon, vain, materialistic and passionate in nature.
Both of them came from meager backgrounds. Ney worked as clerk in an ironworks. Murat was destined for the priesthood. Both ran away in order to join cavalry regiments.
One of the strongest points of reading the two books together was that Murat's biography is more interesting in the beginning, while Ney's is filled with battle after battle to the point where one becomes bored by it all. Later, when Murat gets slogged down in trying to become the King of Italy, Ney is catapulted to the forefront and becomes the hero of the day.
This is not the first history I've read about the Napoleonic Era, but both encapsulate the spirit of the times. Having escaped the bloodshed of the Revolution, France was a nation captured by its ambitious young men. They ran wild over Europe, shattering ancient institutions and introducing republicanism to the world. It is around 1809 that the histories always feel the most optimistic.
And then Spain and Russia comes into the picture, and the histories always become depressing. Ney and Murat were caught in that trend. Murat, spurred on by his vanity, negotiates to become the King of Naples. During the 100 Days, Ney slowly starts to lose his sanity.
With that in mind, I would recommend these histories for two reasons. The first is to get to know two of Napoleon's marshals. The second reason is to understand the spirit of the Napoleonic Age; youthful and optimistic at first, but leading to a cold resolution.
EDIT: I also read Incomparable, Napoleon's 9th Light Infantry Regiment by T.E. Crowdy. As far as a history goes, this was really good. It was well written and interesting, filled with facts and tidbits that really brought the 9th back-to-life.
The closest thing I can relate it to is Band of Brothers, where you follow a single military unit throughout the entire war. You get to know some of the soldiers, and feel bad when they get killed or move onto other regiments. I would recommend it.