This atlas was compiled by the Department of History at The United States Military Academy, and it consist of a collection of Civil War battlefield maps ranging from 1861-1865. Consequently, this atlas shows us how maps have a practical purpose for the military and it also tells a behind the scenes story of the Civil War by shining light on the military strategies that were used in each battle.
http://www.westpoint.edu/history/SitePages/American%20Civil%20War.aspx