Military-readiness advocate Elaine Donnelly warns that the Obama administration’s decision to put women in ground-combat roles amounts to “social engineering to achieve a political end in the name of diversity.” She adds that the policy shift means “lives could be lost unnecessarily, not just women, but men.” Donnelly’s organization, the Center for Military Readiness, released a 42-page report earlier this week exploring the unintended consequences of putting women on the front lines. “It will do great harm to women in the military, especially those who will find themselves in the infantry—something there’s no indication they wanted,” Donnelly said Wednesday in...