A first-rate historical study (and extraordinary first effort), Russell Bonds's Stealing the General: The Great Locomotive Chase and the First Medal of Honor (Westholme, 2006) was my book-of-the-year pick. It is now out in paperback.
Of further interest is the announcement of a working title for the author's next project, War Like the Thunderbolt: The Battle and the Burning of Atlanta. The book is expected to be released late 2009. I'm not privy to any details, but it's fair to say that this one is near the top of my list of next year's most anticipated titles.