"... a major contribution to our knowledge of the place of the Civil War in the history of warfare.... I have long hoped for a sound history of Civil War military staffs... I need hope no more; Hagerman has covered this subject also, with the same assured expertness that he gives to tactics and technology." ―Russell F. Weigley
"... this fine book deserves a place on the shelves of all military historians in this country and abroad." ―American Historical Review
"... a first rate book... impressive... an imposing work... " ―Journal of American History
"This book is filled with enlightening information.... ought to be a standard for many years to come and should be required reading for any serious Civil War military historian." ―Journal of Southern History