I enjoyed all of the books in the Sharpe series.
The last in the original series was Sharpe's Waterloo then number 14n now listed as number 20. In this one Cornwell is telling the story of The Battle of Waterloo. Sharpe ends up in most observing and or participating in most of the major conflicts within the battle. It was very enjoyable and gives you an overall view of the Battle for Waterloo.
http://www.amazon.com/Waterloo-11-Sh...=UTF8&sr=&qid=
On May fifth Bernard Cornwell's non fiction Waterloo: The History of Four Days, Three Armies, and Three Battles will be released. The Kindle price will be $17.99. A little pricey, but I am probably going to get it.
http://www.amazon.com/Waterloo-Histo...N%3DB00MMFCEDC
My favorite Cornwell book is Azincourt. If you have not read it you are missing a really top notch story. The book is a standalone and is not part of any series.
http://www.amazon.com/Agincourt-A-No...N%3DB001NLL8X8
Apache