The Union War

Even one hundred and fifty years later, we are haunted by the Civil War—by its division, its bloodshed, and perhaps, above all, by its origins. Today, many believe that the war was fought over slavery. This answer satisfies our contemporary sense of justice, but as Gary Gallagher shows in this brilliant revisionist history, it is an anachronistic judgment.

In a searing analysis of the Civil War North as revealed in contemporary letters, diaries, and documents, Gallagher demonstrates that wha...