As a commander, he may never have realized his full potential, although his aggressive leadership at Gettysburg helped lay the foundation of the Union victory there. He loved the outdoors, particularly hunting and fishing. He was six feet tall, erect in bearing, and of a somewhat retiring, reticent nature. Charles Veil, a member of Reynolds's staff, left a fitting description of the type of soldier and man his chief was: "Wherever the fight raged the fiercest, there the General was sure to be found, his undaunted courage always inspired the men with more energy & courage. He would never order a body of troops where he had not been himself, or where he did not dare to go."
D. Scott Hartwig, "Reynolds, John Fulton," American National Biography Online, February 2000, http://www.anb.org/articles/04/04-00841.html.