On 5 and 6 May 1864, the Union and Confederate armies met near an unfinished railroad in central Virginia, with Lee outmanned and outgunned, hoping to force Grant to fight in the woods. The name of the battle--Wilderness--suggests the horror of combat at close quarters and an inability to see the whole field of engagement, even from a distance. Indeed, the battle is remembered for its brutality and ultimate futility for Lee: even with 26,000 casualties on both sides, the Wilderness only briefly stemmed Grant's advance.

Stephen Cushman lives fifty miles south of this battlefield. A...