This guide is a great source of useful information regarding the actions, weapons, and ammunition of artillery units in the Battle of Gettysburg. The author discusses the organization of artillery in both armies, providing a concise narrative on the role of each corps' artillery force in this famous event. This work also includes detailed maps for each day's action, a chart with the numbers of each type of gun in each army, and an order of battle listing the types of guns, units strengths, and casualties in each battery.