...e, crossed the Potomac twice and reached Lee at Sharpsburg at the same hour that Franklin reported to McClellan. The column to which I belonged pushed forward its head as rapidly as possible from Boonsboro to the east bank of the Antietam. During that first day, September 15th, only two divisions, Richardson's and Sykes's, drew sufficiently near to receive the enemy's fire. Eager as McClellan was...