I've been to Gettysburg on a good few occasions, and as Highlandman says the audio tape would be a good idea. I always advise my family members and other visitors to read a little about the battle and also watch the movie " Gettysburg" with Jeff Daniels as Chamberlain and Tom Berenger as Longstreet prior to going. Touring the battlefield without a little knowledge of the places and people involved may just appear to be a collection of monuments. I always go in September if possible, not too crowded then. A stop and walk up Little Round Top is not to be missed, going up Big Round Top can be tiring, depending on the age and physical condition of the visitor.