Download or read book The Union War written by Gary W. Gallagher and published by Harvard University Press. This book was released on 2011-04-25 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a searing analysis of the Civil War North as revealed in contemporary letters, diaries, and documents, Gallagher demonstrates that what motivated the North to go to war and persist in an increasingly bloody effort was primarily preservation of the Union.