When Howard Mansfield grew up, World War II was omnipresent and hidden. This was also true of his father's time in the Air Force. Like most of his generation, it was a rule not to talk about what he'd experienced in war. "You're not getting any war stories from me," he'd say. Cleaning up the old family house the year before his father's death, Mansfield was surprised to find a short diary of the bombing missions he had flown. Some of the...