The Lost Cause and the Great War tells the stories of central Tennessee Progressive-era reformers to illustrate the fascinating broader issue of how Southerners steeped in Lost Cause Civil War mythologies simultaneously developed patriotic American fervor. Focusing on Luke Lea, a prominent politician and American army officer who attempted to capture Kaiser Wilhelm II during World War I, the book reveals the intricate interplay between three competing ideas: attachment to the memory of the Confederacy, intense American nationalism, and advocacy for progressive reforms.

Hunt shows that Lea and his contemporaries sought either to harmonize these competing loyalties or to compartmentalize them to use when needed. Through insightful accounts of Tennessee's 1928 presidential campaign, the American Legion's response to cuts to veteran benefits in 1933, and the redefinition of America's global role post-World War II, Hunt shows how these reformers achieved a balance that held until the Civil Rights movement disrupted this delicate consensus.

Hunt's rich account reveals how Lea and others like him wove national patriotism and Southern collective memory into a cohesive narrative that supported their broader Progressive goals. The book provides vivid examples of how collective memory and narratives shape social and political movements.