The politics and culture of organized labor during the age of industrial capitalism in the United States was refracted through the semantics, ideas, and personalities of sectional conflict. The experience of war helped forge class consciousness, and the notion of a continued antislavery struggle was central to the identities of newly radicalized workers. This book explores the sweeping variety of Civil War memory within Gilded Age and Progressive Era labor unions, among political radicals, and in third-party movements. That memory evinced revolution and reform, as competing and sometimes coinciding narratives emerged between Reconstruction and World War I. The first worked largely in the service of industrial unionism and depicted the Civil War’s legacy as a precursor to a thorough--even global--liberation of all workers. The second emphasized the preservation of the Union, the imperatives of legalism and social order, and the fundamental loyalty of white workingmen to the reconstituted nation-state, tending to further conciliatory labor strategies, as well as the leadership prerogatives of exclusionary craft unions. The preeminence of reformist memory, which was predicated on compromise with capital and the sanctity of the state, came ultimately to supplement trade union bureaucratization, labor nationalism, and the propagation of antiradicalism on the American scene during and after the Great War.