Main Entrenchment Federal Battle Line Album Williamson County Image 115/204 Apr 23, 2016 12:08 Original Metadata Camera Model:Canon EOS 50D Original Time Taken:Apr 23, 2016 12:08 Shutter Speed:1/250 sec Aperture:f/10 ISO Sensitivity:640 Exposure Compensation:-0.33 EV Metering Mode:Pattern Flash Fired:No Flash Focal Length:29 mm located just north of the "Assault on the Cotton Gin Historic Park" in Franklin at Columbia Ave (US31) at Cleburne St. This 1936 marker is on a concrete marker facing Columbia Ave.