By 1861 William Lloyd Garrison's public image had progressed from that of impulsive fanatic to one of widely respected and influential abolitionist. As editor of The Liberator and president of the American Anti-Slavery Society, he was the acknowledged spokesman for radical antislavery opinion.

Garrison was profoundly disturbed by the advent of war. In his correspondence, he kept military events at a distance, focusing on the morality of the conflict, an issue made the more poignant by his eldest son's enlistment in the 55th Massachusetts Regiment in 1863--the same year that...