The Sunday Question: Influential Civil War Books

Some books are more influential than others in shaping or reshaping our understandings of history or the direction of historical inquiry. Given the number of books published about the Civil War era, surely that must be true of that topic. Share with us the three (and only three … make some tough choices, folks) titles published from 2000 to 2014 that have most shaped your understanding of the period. Explain your choices.