Mark A. Lause . Race and Radicalism in the Union Army . Urbana and Chicago : University of Illinois Press . 2009 . Pp. 186. $45.00. Christian G. Samito . Becoming American under Fire: Irish Americans, African Americans, and the Politics of Citizenship during the Civil War Era . Ithaca : Cornell University Press . 2009 . Pp. x, 305. $39.95.