"The Confederate army, during its march into Pennsylvania, routinely kidnapped blacks and sold them south. By the time Lee’s legions arrived in Gettysburg, virtually all of the town’s free blacks had hidden or fled. On the morning of July 3, General George Pickett’s division prepared for its legendary charge. Nearby, where the Union forces were gathered, lived Abraham Brien, a free black farmer who rented out a house on his property to Mag Palmer and her family. One evening before the war, two slave-catchers had fallen upon Palmer as she made her way home. (After the passage of the Fugitive Slave Act, slave-catchers patrolled the North, making little distinction between freeborn blacks and runaways.) They bound her hands, but with help from a passerby, she fought them off, biting off a thumb of one of the hunters. "