A participant's chronological account and analysis of the campaign around Chattanooga, tracing army organization, preliminary maneuvers, the fierce fighting at Chickamauga, and the subsequent engagements for Chattanooga including Lookout Mountain and Missionary Ridge. The narrative combines operational description of troop movements and command decisions with focused attention on the experiences and contributions of Wisconsin units. Chapters present battlefield narrative, orders and organization, maps, and an index, and offer assessments of strategy and leadership to explain how the campaign unfolded and influenced later operations.