1. Of Duty Well and Faithfully Done: A History of the Regular Army in the Civil War by Clayton R. Newell and Charles R. Shrader (Univ of Neb Pr, 2011).
This thick tome looks to be a reference guide of great value. Just about every aspect of the Regular forces from top level organization down to equipment appears to be addressed.
2. Breaking the Heartland: The Civil War in Georgia edited by John D. Fowler and David B. Parker (Mercer Univ Pr, 2011).
The subject matter dealt with in these eleven essays is primarily society (Unionism, race, class, and gender) and politics.