Check out this article on the history of Civil War battlefield preservation at The Washington Post:
Despite admirable efforts to connect battlefields to the larger history of the Civil War, the one thing that battlefields can teach very well is the history of what happened in a particular place. If the goal is simply to inspire thoughts about the larger social history of the Civil War, one battlefield is pretty much the same as the next — and it becomes difficult to explain why we need to preserve so many of them, and with so much land taken off the tax rolls. If the goal is to make people passionate about battlefields and their preservation, visitors need to engage with the actual place to understand its strategic importance and the tactical back-and-forth.
I would argue that visitors need to get the strategic importance and tactical back-and-forth because they have intrinsic importance, not just because they inspire respect for preservation.
I seem to run across more discussions about how to effectively integrate non-military subjects into battlefield interpretation than about how to effectively interpret the battlefield itself. Don’t get me wrong—I’m glad that battlefield interpretation is more well-rounded and contextualized than it used to be. We rightly emphasize the fact that the battles didn’t happen in a vacuum, but that insight cuts both ways.
Just as the war’s larger issues determined the conflict, the “tactical back-and-forth” determined the resolution of those larger issues. Emancipation, Union, and all the rest of it ultimately hinged on the stuff of old-fashioned military history: maneuver, terrain, firepower, etc. We preserve these places not only because people suffered and died there, but also because what happened there mattered. It mattered that such-and-such a colonel held a particular position, that such-and-such a general flanked an enemy. Determining the outcome of larger questions, after all, is why battles tend to be fought.