• McClellan and the Union High Command, 1861-1863: Leadership Gaps That Cost a Timely Victory by Jeffrey W. Green (McFarland, 2017).
Green's book examines the Union high command during the first half of the war through the lens of McClellan, who was the dominant military figure of that period (at least in the eastern theater). "This re-examination of the high command and McClellan's war in the East provides a broader understanding of the Union's inability to achieve victory in the first two years, and takes the debate about the Union's leadership into new areas."
An interview with the author is forthcoming and will serve as a better introduction to the volume than a Booknotes post, so I'll cut this short. I have my fingers crossed that I'll get the answers back in time to post the Q&A this week.