A. Wilson Greene's Breaking the Backbone of the Rebellion: The Final Battles of the Petersburg Campaign is by all knowledgeable estimations an excellent military study, originally published by Savas Publishing in 2000 and later reissued by Da Capo. Of course, I delayed purchasing a copy, and now prices for these out of print editions are getting a bit too steep. Fortunately, University of Tennessee Press will soon be rescuing people like me with its new reprint, scheduled for Feb 2008.
Alternatively, interested readers who do not wish to read an entire book on the subject may consult Greene's excellent distillation of the book in Blue & Gray Magazine (Vol. XVIII #3). It's a very well done issue and covers some of the same ground.
Speaking of B&G, the current issue, mailed this week, is my most anticipated of recent memory. The Battle of Davis Bridge is one of the few battles I've done original research for [much of this work went into the Corinth campaign wargame I designed with John Tiller, published by HPS Simulations]. Note the picture here of my wife holding the issue. That little devil.