"The battle of Gettysburg lasted three days, spanned more than 17 square miles, and involved about 160,000 men. To say it’s a sprawling place would be an understatement. To walk to the site of every skirmish, every pitched battle, every troop movement, would take days on end.
It’s why bus tours, self-guided automobile tours, and even horseback tours are so popular. This hike, though, hits several of the most important spots to be explored, all in one afternoon."