The United States saw long-simmering sectional tensions erupt into fighting at Fort Sumter, South Carolina, in April 1861.This began what would become the most cataclysmic military struggle in the western world between Waterloo and the First World War. This volume focuses on events in the Virginia theater during the conflict's first two years, highlighting Union and Confederate strengths and weaknesses, leadership and strategy on each side, and the ways in which events on the battlefield influenced politics, diplomacy, and debates about emancipation. Osprey Essential Histories are complete yet concise studies of each major conflict in history.