Gettysburg Campaign. The Union Army 1st Corps camped here June 30, 1863, on the way to Gettysburg. Followed later by the 11th and 3rd Corps, they marched next morning to relieve Buford's cavalry, already in action west of the town. Old US 15 near Marsh Creek, Greenmount, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap
