So I was right anyway?
I highly recommend Jeff Sharra's Pulitzer Prize winning classic "The Killer Angels". Really well researched and succinct and highly factualized account of the battle at Gettysburg. His son, Michael Shaara writes in the same style, though a good bit more dry and hard to churn through. The Killer Angels is a page burner. One of my favorite books and sparked a keen interest in the Civil War for me.
Up next is Omnivore's Dilemna by Michael Pollan.