POLAND (June 24, 2018) Marines assigned to the 26th Marine Expeditionary Unit (26th MEU) and Sailors assigned to the Amphibious Ready Group 4 man the rails of the Harpers Ferry-class dock landing ship USS Oak Hill (LSD 51) during the celebration of the Polish navy's 100th birthday. Oak Hill is homeported in Virginia Beach, Va., and is conducting naval operations in the U.S. 6th Fleet area of operations. (U.S. Marine Corps photo by Staff Sgt. Dengrier M. Baez/Released)