I went to Shiloh last spring. If I hadn't got the directions from Map Quest I may not have found it. I saw no road signs about the battle field till I got to the park entrance. I wanted to see where Lew Wallace was before the battle. No luck in finding that. We went from Shiloh to Corinth. We drove all over and never found anything. There was a sign pointing to the visitor center but there was no visitor center. Needless to say I wasn't a happy camper.
Today we have GPS, digital maps, road signs, etc., and people still give Lew Wallace a hard time about getting lost in an unfamiliar state in 1862.