He came home so changed that his best friends did not know him, but is well & all right now. — Henrietta Maria Benson, describing her son, Winslow Homer, when he returned from the Civil War. The painting is “The Veteran in a New Field” (1865) by Winslow Homer (American, 1836–1910). Painted through summer and fall 1865, not long after the nation came to grips with Robert E. Lee’s surrender…