This is the route we thought we were going to do.
For the first time we used smart phones, so we almost knew the location at every moment with Google Maps, however the information provided by old plans (thanks to the graphic design) was even more accurate, a series of plans made by the American army in the 40s and 50s, based on those by the French army. These plans can be dowloaded from the online archive of The University of Texas at Austin.
This is the exactly route we followed. Besides you can watch some videos and pictures we included in this interactive map.