* A full-length study and fresh interpretation of The Battle of South Mountain, the first conclusive victory for the Army of the Potomac Most authors of the Maryland Campaign brush past South Mountain in a few paragraphs or a single chapter. Jordan, however, presents a full-length study based upon extensive archival research, newspaper accounts, regimental histories, official records, postwar reunion materials, public addresses, letters, and diaries. Readers will come away with a full understanding of the strategic results of the fighting in general, and a keen appreciation of the tactical actions at Fox, Turner, and Crampton’s gaps in particular. The Northern victory provided a substantial boost for the downtrodden men of the Union army who recognised the battle for what it was: a sharp, hours-long combat that included hand-to-hand combat and resulted in nearly 5,000 casualties. Indeed, South Mountain was the first conclusive victory for the Army of the Potomac, representing the first time the men of that army maintained possession of the field and with it the responsibility of burying the dead. Jordan goes well beyond the military aspects of the battle to better understand and explain how and why South Mountain faded from public memory. He chronicles how and why former Confederates, true to the Lost Cause, insisted they were outnumbered while proud Union veterans remembered South Mountain as a full-scale engagement, wholly distinct from Antietam, where they outfought and defeated their Rebel opponents.