Longstreet's Countermarch Examined & Walked
After a trip to the battlefield in 2011, I decided to study up on the Countermarch (for simplicity, I concentrated on General McLaw's Division route) and walk as much of it as I could. I had a map of the most probable route from Reference 1. I figured it would be about a seven mile walk and trained for it over four months. In 2012, I walked about 80% of the route specified in Reference 1's map. The northwest "Loop" from Herrs Ridge Road to the Black Horse Tavern Road via the old Adam Butt and Mark Forney farm lanes are on private property so I couldn't walk it.
When I got home, I continued my research because I had the inkling that the route I walked mirrored today's roads too much. Eventually I purchased Reference 2, which also contained a map of its version of the Countermarch. I think this one presented a truer depiction of the route that may have been taken in 1863. But both maps had their strengths and weaknesses, so which one do I use? I needed a tie breaker. Fortunately I had one, a remarkable set of four maps, Reference 3. These show troop dispositions over the three days, but more importantly, the roads/lanes and farms that existed at the time of the battle.
So based on the above 3 references and supplemented by Reference 4 and Reference 5, my best educated guess as to the route taken by General McLaw's Division is shown in my two attachments (I had to break it up into a "Northern" and "Southern" section to get it all in).
Real World Considerations
1. I guess it may be possible to walk the "Loop" due to the small number of resident's permissions required. However, walking McLaw's overland route to the Willoughby Run Road ("River Road") would be impossible given the half million homes populating that section today.
2. The River Road portion is particularly interesting because you can walk the actual path, or very close to it, the Confederate soldiers did. For about 0.5 miles south of its intersection with the Fairfield Road, its path is essentially the same as it was. Then the old road would have veered toward the riverbank. The low ground at this point would have been the most obvious place for this change in direction. As you walk toward the river, notice a low water crossing that continues east out of the river valley. That farm lane existed during the battle and lead to the Emanual Pitzer Farm. Reference 3 shows General Pickett's Division using this lane on July 3, 1863 on the way to their eventual jump off point. Continuing your walk south on the river's west bank, you will see the "driveway" to the John Plank Farm on your right. One thousand feet beyond the "driveway", the old road made a low water crossing over to the river's east bank. I saw a couple of duck blinds here, so I would avoid doing this during duck hunting season. Fifteen hundred feet beyond the crossing, the old River Road would have intersected the Black Horse Tavern Road at the old William Felix Farm (not extant). A quarter mile later, the Black Horse Tavern Road intersects with the Millerstown Road @ the Pitzer Schoolhouse (not extant). The troops would have turned east here and followed essentially the same route as today's roads to Warfield Ridge. Have fun.
References:
1. Gettysburg – The Second Day, Pfanz, University of North Carolina Press, Chapel Hill, NC, 1987.
2. The Second Day at Gettysburg: The Attack and Defense of Cemetery Ridge, July 2, 1863, Shultz and Mingus, Savas Beatie LLC, El Dorado Hills, CA, 2015.
3. The Battlefield at Gettysburg, (four map set), Desjardin, The Gettysburg Foundation, 2011.
4. www.historicalaerials.com, (old USGS maps and aerial photos).
5. Google Maps, (current day maps and satellite photos).