Battlefield Tour Defense Secretary Dr. Mark T. Esper and Army Gen. Mark A. Milley, the chairman of the Joint Chiefs of Staff, tour Bois Jacques, a Battle of the Bulge site in Belgium, with soldiers of the 101st Airborne Division. The division defended Bastogne in 1944. SHARE: Download: Full Size (1.45 MB) Credit: Jim Garamone, DOD VIRIN: 191215-D-FN314-002.JPG Photo Gallery