Memorials on PA Rt. 61 or Are They?

Morgan found this marker along PA Rt. 61 and noticed that someone had turned it into a type of memorial. Was some unknown soldier buried here?

And then he noticed this marker, without the flags. So we decided to add flags and a small wreath - just in case. It was difficult since it was on top of a slope right along the road and there was a very dead and decaying raccoon right below it. But us two seniors were able to hobble up the slope and place our small memorials to whomever or whatever...or could it be a wherever...