Turning the Tide — William H. Weber

In spite of Oneida's heroic stand against the Chinese, foreign armies are poised along the foothills of the Appalachian Mountains preparing for the final assault and America's inevitable defeat. For John, turning the tide will mean going deep behind enemy lines and organizing the sort of insurgency he fought so hard against in Iraq. But more than that, it'll mean coming to terms with the brutality of war and the realization that sometimes the deepest scars are the ones that can't be seen.