Marines listen to Mr. Ray Shearer, a Marine veteran and director and chairman of American Oversees Memorial Day Association, explain different factors in the Battle of Belleau Wood during World War I, on the battle ground Belleau, France, May 26, 2016. Marines observed trenches, depressions of fighting holes and enemy shelling on the battle ground. - Marines listen to Mr. Ray Shearer, a Marine veteran and director and chairman of American Oversees Memorial Day Association, explain different factors in the Battle of Belleau Wood during World War I, on the battle ground Belleau, France, May 26, 2016. Marines observed trenches, depressions of fighting holes and enemy shelling on the battle ground.

Maj. Brian Dix, outgoing commanding officer of "The Commandant's Own," The United States Marine Drum & Bugle Corps, passes the unit's guidon to Capt. Christopher Hall, incoming commanding officer, during a change of command ceremony at Marine Barracks Washington, D.C., Dec. 11, 2014. Dix was appointed as the fourth director of "The Commandant's Own," in September 1998. Hall joined "The Commandant's Own" in March 1994 as a mellophone bugler, and is the only officer to serve as a Drum Major, Assistant Director, Operations Officer and Executive Officer for the unit. - Maj. Brian Dix, outgoing commanding officer of "The Commandant's Own," The United States Marine Drum & Bugle Corps, passes the unit's guidon to Capt. Christopher Hall, incoming commanding officer, during a change of command ceremony at Marine Barracks Washington, D.C., Dec. 11, 2014. Dix was appointed as the fourth director of "The Commandant's Own," in September 1998. Hall joined "The Commandant's Own" in March 1994 as a mellophone bugler, and is the only officer to serve as a Drum Major, Assistant Director, Operations Officer and Executive Officer for the unit.

Sgt. Katie Maynard, a native of Hancock, Mich., is part of the Marine Barracks Washington, D.C., S-3 operations center, Aug. 21, 2014. The S-3 at the Barracks is responsible for coordinating all training and ceremonial missions, including funerals, parades and joint-service events. (Official Marine Corps photo by Cpl. Dan Hosack/Released) - Sgt. Katie Maynard, a native of Hancock, Mich., is part of the Marine Barracks Washington, D.C., S-3 operations center, Aug. 21, 2014. The S-3 at the Barracks is responsible for coordinating all training and ceremonial missions, including funerals, parades and joint-service events. (Official Marine Corps photo by Cpl. Dan Hosack/Released)

Cpl. Andre Brown, Marine Barracks Washington, D.C. administrative clerk, dreams of teaching high school history after he leaves the Marine Corps. For now, he is allowing the Corps to shape him into a leader for his future career. (Official Marine Corps photo by Cpl. Dan Hosack/Released) - Cpl. Andre Brown, Marine Barracks Washington, D.C. administrative clerk, dreams of teaching high school history after he leaves the Marine Corps. For now, he is allowing the Corps to shape him into a leader for his future career. (Official Marine Corps photo by Cpl. Dan Hosack/Released)

Col. Christian G. Cabaniss, Marine Barracks Washington, D.C., commanding officer, sews seeds on the front lawn on the National Museum of American History as part of the Flanders Field Project in Washington, Nov. 12. The project’s goal is to recreate the poppy fields that blossomed on the war-stricken land of Europe in the aftermath of WWI by spreading seeds over the front lawn of the museum. - Col. Christian G. Cabaniss, Marine Barracks Washington, D.C., commanding officer, sews seeds on the front lawn on the National Museum of American History as part of the Flanders Field Project in Washington, Nov. 12. The project’s goal is to recreate the poppy fields that blossomed on the war-stricken land of Europe in the aftermath of WWI by spreading seeds over the front lawn of the museum.

Sgt. Maj. Angela M. Maness, Marine Barracks Washington, D.C. sergeant major, right, salutes Col. Christian Cabaniss, the Barracks commanding officer, left, during a relief and appointment ceremony at the Barracks June 27, 2013. Maness assumed command of her post after relieving Sgt. Maj. Eric J. Stockton, former Barracks sergeant major. Stockton retired during the ceremony, after more than 30 years of service. - Sgt. Maj. Angela M. Maness, Marine Barracks Washington, D.C. sergeant major, right, salutes Col. Christian Cabaniss, the Barracks commanding officer, left, during a relief and appointment ceremony at the Barracks June 27, 2013. Maness assumed command of her post after relieving Sgt. Maj. Eric J. Stockton, former Barracks sergeant major. Stockton retired during the ceremony, after more than 30 years of service.

Cpl. Sean Breheny, rifle inspector with the Marine Corps Silent Drill Platoon, gets promoted to the rank of corporal during a ceremony at Marine Barracks Washington, D.C., June 4. - Cpl. Sean Breheny, rifle inspector with the Marine Corps Silent Drill Platoon, gets promoted to the rank of corporal during a ceremony at Marine Barracks Washington, D.C., June 4.

Sgt. Timothy A. Spreder, color sergeant of the Marine Corps, holds the national ensign during a Battle Color Detachment Ceremony at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., March 6, 2012. - Sgt. Timothy A. Spreder, color sergeant of the Marine Corps, holds the national ensign during a Battle Color Detachment Ceremony at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., March 6, 2012.

Marines from Company B, Marine Barracks Washington stand at ease during the chapel service for the family and friends of Henry H. Black, seventh sergeant major of the Marine Corps, at Marine Corps Base Quantico, Va., Aug. 29. Black passed away in his home in Fredericksburg, Va., Aug. 24. He served in Korea and Vietnam and earned a Silver Star, Bronze Star, Purple Heart, and Combat Action Ribbon. - Marines from Company B, Marine Barracks Washington stand at ease during the chapel service for the family and friends of Henry H. Black, seventh sergeant major of the Marine Corps, at Marine Corps Base Quantico, Va., Aug. 29. Black passed away in his home in Fredericksburg, Va., Aug. 24. He served in Korea and Vietnam and earned a Silver Star, Bronze Star, Purple Heart, and Combat Action Ribbon.

Staff Sgt. Andres De La Cueva, the parade adjutant, marches during a Friday Evening Parade at Marine Barracks Washington Aug 3. - Staff Sgt. Andres De La Cueva, the parade adjutant, marches during a Friday Evening Parade at Marine Barracks Washington Aug 3.