WEST POINT, New York — It was a decades-old Army tradition that junior officers would eat lunch together every day in Army-run dining halls. There they would trade ideas they’d picked up in their training. But in the last decade, to save money, contractors such as Kellogg, Brown and Root have replaced the old dining halls with civilian-style cafeterias, some boasting big-screen TVs. The officers stopped gathering . . . and stopped talking. That had the effect of isolating young leaders, preventing them from getting answers to life-and-death questions — and from sharing their own answers they might have learned […]