Marines from 1st Battalion, 25th Marine Regiment, 4th Marine Division, hold the Marine Forces Reserve Centennial banner after the Disabled American Veterans 5K run at Fort Independence on Castle Island in Boston, Nov. 12, 2016. From World War I through the wars in Iraq and Afghanistan, the Marine Corps Reserve has played an essential role in the Marine Corps Total Force by augmenting and reinforcing the Active Component across the full range of military operations. Reserve Marines bring unique skills and advanced degrees from their civilian occupations into their service with the Marine Corps. (U.S. Marine Corps photo by Cpl. Melissa Martens/ Released)