A Concise Guide to the Artillery at Gettysburg is a tremendous resource jammed with useful information regarding the actions, weapons, and ammunition of artillery units at the war’s pivotal battle. Gregory A. Coco sets forth the organization of artillery in both armies and offers a concise narrative about the role played by the artillery of each corps in the battle. This study 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.