Note 3 — Chapter VI
Reading edition
The map only shows one point where Lee crossed into Maryland, but the army divided before reaching the Potomac, one part crossing at Williamsport, and the other at Shepherdstown, and, uniting at Hagerstown, moved on toward Chambersburg. From this point, Lee sent a portion of Ewell's division as far north as Carlisle, while another portion marched to York, then to Wrightsville, on the Susquehanna river, all returning in time to meet the Union army at Gettysburg.