Ferrero's Brigade, Sturgis' Division

   After Ferrero's Brigade carried the stone bridge it formed under cover of the high ground north of it. Nagle's Brigade formed on its left. Willcox's, Scammon's and Rodman's Divisions formed in advance of them and moved on Sharpsburg. On the repulse and retirement of the three Divisions, Ferrero and Nagle advanced to check Confederate pursuit. The left and center of Ferrero's Brigade halted under cover of the crest of the ridge beyond the ravine, the right (35th Massachusetts) continued its advance to Otto's lane, 270 yards distant, and engaged the Confederates posted on this line behind the stone walls right and left of it and in the 40 acre cornfield south. The engagement continued into the night, Ferrero's Brigade suffering much loss, the principal part of which fell to the 35th Massachusetts, which had 214 officers and men killed and wounded.