Cedar Mountain to Antietam: A Civil War Campaign History of the Union XII Corps, July - September 1862

The diminutive union XII corps found significant success on the field at Antietam. Its soldiers swept through the East Woods and the Miller Cornfield—permanently clearing both of Confederates—repelled multiple Southern assaults against the Dunker Church plateau, and eventually secured a foothold in the West Woods. This important piece of high ground had been the Union objective all morning, and its occupation threatened the center and rear of Gen. Robert E. Lee’s embattled Army of Northern ...