Why did I love this book?
This one is pricey, but is perhaps the best single source on war as carried out by Napoleon. Why does this matter? Because—less logistics, for the most part—we are still locked into an essentially Napoleonic system of making war. I love this book because the author was patient and thorough, didn’t take shortcuts, assumed the reader had a lot to learn on the subject, and taught just about everything there was to teach.