Keegan, as much as any living writer I've read, has the ability to combine great scholarship with sturdy reasoning and compelling, accessible language. Keegan skillfully argues his contra-Clausewitz point of view while providing a stunning history of warfare. He shows us that if one learns something about the history of warfare, one learns something about history--period (and vice versa). This is sad but true. I'm not always sure where Keegan's heart is; he sometimes seems to love the smell of napalm in the morning. But at the risk of sounding callous, I think this is a minor criticism. It is a given (for most of us) that war is a terrible, undesirable, but (Keegan shows) inevitable thing. Surely Keegan is the greatest living military historian. Someone please correct me if I'm wrong. The book includes some well-chosen, helpful illustrations, and the notes are a great source for further reading.