The Civil War Preservation Trust (
http://www.civilwar.org) is one of the organizations that are devoted to acquiring the land, when and where possible, to expand the Battlefield parks, along with others including the Central Virginia and others.
Their efforts in fund raising and their lobbying efforts at the national level as well as local levels have led to increasing the size of many of the preserved battlefields every year.
It is hard to stem the tide of development in these areas, as those that want to develop on and in the battlefield area will continue, like the WALMART at Gettysburg. A few years ago, a developer at Harpers Ferry was DENIED a permit to excavate the higher ground above Harpers Ferry; so on a holiday weekend, he moved his equipment in and dug a trench entirely across the area. I think he got his wrists slapped, but the damage was done. I do not know for sure, but I think the development did stop.
Sometimes, writing letters to various legislatures and local and national politicians are helpful, even from people who are not members of that particular constituency.
Anyway, it all does cost and it all come back to dollars and cents. It is hard to fight against that.
