I am a huge ghost believer, and Gettysburg was the place where I knew I'd find ghosts. After doing much research, I discovered that most of the tours in Gettysburg do not take you to the Triangular Field. This field has the most ghost activity. Paranormal investigators have visited this field and have had many experiences.
We headed out there on Saturday night. There were probably about 15 other people in the fields with us that night. Although I didn't see anything at that time, I felt chills and the feeling of being watched and at times found it hard to catch my breath the farther into the field we went. After coming home and watching my videotape from the field, there were so many orbs, ghostly figures, etc., in it. One shot I took aiming into the woods had the figure of a soldier standing with his gun aimed towards me. Really amazing.
I highly recommend visiting the Triangular Field after dark. It is located behind Devils Den. You can stay in the battlefields until 10 at night. Take advantage of it!