During the Civil War, the Union army—like the society from which it sprang—appeared cohesive enough to withstand four years of grueling war against the Confederates and to claim victory in 1865. But fractiousness bubbled below the surface of the North’s presumably united front. Internal fissures were rife within the Union army: class divisions, regional antagonisms, ideological differences, and conflicting personalities all distracted the army from quelling the...
