Military maps have always played a crucial role in planning strategy, designing battle plans, and finding the best points for supply routes or even a retreat. This was no more evident than in the American Civil War where large armies traversed a widespread landscape unfamiliar to most commanders. Knowing the roads to and from the sites of military engagements, as well as the topography of the locality, were indispensable in conducting war maneuvers. Thus, both sides went to great lengths to ensure that they had as much of a tactical advantage as possible. Today, Civil War military maps are used by historians and other researchers in analyzing the campaigns of the war in order to ascertain troop positions, defensive structures, roads, campsites, local buildings, and topography. A number of battle maps provide information about a locality that is not available elsewhere such as the configuration of small towns, the location of plantations, and the names of landowners in the area. Those interested in cartography find Civil War maps to be an endless source of fascination because of the varieties in methodology, design, and composition. Civil War maps offer a unique glimpse of the nation’s most portentous conflict.