Sharpe's Battle, one of a series of books describing the escapades of Richard Sharpe, the best god-damned soldier in King George's army. Plotting and characterization are wonderful, but my favorite part is the atmosphere of the books, which is given a great deal of teeth by the author's extensive historical knowledge. While some facts are ignored or changed to make room for the plot, every book is ended with a historical notes section detailing what has been changed, meaning not only are the books an enjoyable read, they also serve as a decent primer on Napoleonic warfare and the career of Wellington in particular.