The Army of the Potomac in the Overland & Petersburg Campaigns: Union Soldiers and Trench Warfare, 1864-1865The final year of the Civil War witnessed a profound transformation in the practice of modern warfare, a shift that produced unprecedented consequences for the soldiers fighting on the front lines. In The Army of the Potomac in the Overland and Petersburg Campaigns, Steven E. Sodergren examines the transition to trench warfare, the lengthy campaigns of attrition that resulted, and how these seemingly grim new realities affected the mindset and morale