Providing a documentary history of a Burned County from the Colonial Era through the early Twentieth Century
perhaps timing had something to do with it as well. While others faced tremendous force at Gettysburg the same time without retreating, Keyes appears to have flinched when he could have held his ground.
His casualties certainly don't seem to justify the level of his concern. But perhaps the operational plan should have been a bit grander in it's scope, with a more direct testing of Richmond's defenses rather than demonstrations and railroad burnings.