Well the author of the articles that me and Hinkel posted stated this: "I am very convinced that the dead seen in these images are members of the 151st Pennsylvania Infantry Regiment. Initially I would have thought them to be the dead of the 24th Michigan, but what I understand now shows me that the Iron Brigade skirted to the north of this location, falling back, past the 151st Pennsylvania who were going to take the brunt of Virginia and North Carolina units pressing through the woods. The 151st Pennsylvania made their stand on the crest, in front of the edge of the woods where Reynolds fell, until falling back across the field bordered by fences to the north and south."