A somewhat "low frills" volume, this book nevertheless provides a good primer on most of the major personalities on both sides of the conflict. Each profile (roughly 15 pages each) includes a War-era photo of the given general, perhaps a map of a major engagement, and often a photo from much later in life.
On the text side, the profiles follow each general from childhood to death, explaining how each landed in a military career. The profiles are concise and insightful. Axelrod also rates each judge using a star system (four is best). Although I'm no expert, his ratings seem appropriate.