Warfighting

Colonel Derrick Heyl, Commanding Officer of Headquarters Battalion, Marine Forces Reserve shakes the hand of Mike Flynn, a Marine Corps veteran and guest of honor for the 241st Marine Corps birthday here, Nov. 9, 2016. Each year, the Marines celebrate the Corps’ birthday with a cake-cutting ceremony followed by a run. Since Nov. 10, 1775, the United States Marine Corps has earned the reputation as the world's most effective expeditionary fighting force – engaging in combat on battlefields across the globe. (U.S. Marine Corps photo by Sgt. Sara Graham)