The most well known Franklin fighting occurs at the Carter House and Cotton Gin, but there are other areas that saw action. Most of these are lost to development. One such area is the Union's forward line.
As the Union army retreated into the defenses around Franklin Wagner's Division formed a defensive line in front of the main entrenchments. Emerson Opdycke thought the order was ridiculous and kept his brigade marching into town, eventually stopping just north of the Carter House. Wagner's two remaining brigades were quickly overwhelmed once the Confederate attack began and were routed. Opdycke's men would pitch into the fight around the Carter House and help turn the tide (which we'll get to in another post). A few days later Wagner would request to be relieved of command.
Basically nothing remains of this forward line. There is a nice marker next to a car wash but that's about it.