Acting Army Secretary Ryan McCarthy on Sept. 25 announced new criteria for interment (burial) and inurnment (preservation of cremated remains) at Arlington National Cemetery to keep from running out of space in the nation’s most hallowed military cemetery. Congress called on the Army to revise the criteria for burial at the cemetery in the 2019 National Defense Authorization Act, with the goal to keep it functioning as an active burial ground for another 150 years. That’s not possible under present rules. Today, some 95,000 burial spaces remain available, but with more than 20 million living veterans and 2 million military...