Members of the base Honor Guard team prepare to fold the American flag during a Memorial Day remembrance ceremony at Bagram Airfield in Afghanistan on May 30, 2016.

On this Memorial Day, we join our valiant troops in honoring hundreds of thousands of fallen American heroes who rest for eternity in sacred cemeteries from Arlington, Va., to Normandy, France. As I wrote in Brothers Forever: “There is no inscription to define the meaning of their sacrifice. That mission is ours.”