This map was adapted from a map published by the U.S. Army Center of Military History in chapter twelve of "American Military History Volume I, The United States Army and the Forging of a Nation, 1775-1917" by Richard W. Stewart, general editor. It can be found as Map 34 on page 299, and at https://history.army.mil/books/AMH-V1/ch12.htm

The map was georeferenced and hand digitized, using Esri's generalized US state boundary dataset as a base layer to improve drawing speed.

One notable feature of the map is how it distinctively shows Sherman's March through Georgia in 1864 and the Mississippi River campaigns.

From the text: "Viewing the war in its broadest context, a historian could fairly conclude that a determined general of the North had bested a legendary general of the South, probably the most brilliant tactician on either side, because the Union could bring to bear a decisive superiority in economic resources and manpower. Lee’s mastery of the art of warfare staved off defeat for four long years, but the outcome was never really in doubt. Grant and Lincoln held too many high cards; and during the last year of the war, the relations between the Union’s Commander in Chief and his General in Chief set an unexcelled example of civil- military coordination. This coordination was essential to prosecuting a multitheater war characterized by the slow, yet steady expansion of the area brought back under Federal control over the course of four years of struggle. (See Map 34.)"