All things related to the battle of Gettysburg continue to fascinate the reading public, but few know artillery's important role in deciding the outcome of that epic battle. Philip Cole has now written a detailed account of the technical and organizational factors behind Union and Confederate artillery actions at Gettysburg, focusing on the operation of the artillery branches-their organization, men, equipment, ammunition, and performance. In this fresh approach, Cole amasses technical detail on manpower, command structure, logistics, and artillery technology and analyzes each detail in light of its impact on the battle. In doing so, he never loses sight of the human drama behind the guns-the many tales of heroism and human suffering of the artillery units. Cole's conclusions on the role of artillery at Gettysburg will influence historians and researchers for years to come.