U.S. Marines training in the desert - U.S. Marines with 1st Battalion, 1st Marine Regiment, 1st Marine Division, determine the distance of targets during the simultaneous ground assault portion of Marine Air Ground Task Force Distributed Maneuver Exercise (MDMX) on Marine Corps Air Ground Combat Center, Twentynine Palms, California, Feb. 14, 2023. MDMX is a maneuver exercise that incorporates air, ground, and logistics operations to create favorable conditions for the Joint Force. (U.S. Marine Corps photo by Sgt. Armando Elizalde)

Japan Ground Self-Defense Force Service Members disembark from an MV-22B Osprey with U.S. Marines while conducting Vertical Assault training during exercise Forest Light Western Army at Camp Takayubaru, Kumamoto, Japan, Jan. 28. - Japan Ground Self-Defense Force Service Members disembark from an MV-22B Osprey with U.S. Marines while conducting Vertical Assault training during exercise Forest Light Western Army at Camp Takayubaru, Kumamoto, Japan, Jan. 28.

The exercise enabled Reserve Marines to spend two weeks working together, battling the elements to ensure that they are ready to fight tonight and respond to the nation’s calls. - Marines with Weapons Company, 1st Battalion, 24th Marines, 4th Marine Division, navigate the route to their next checkpoint during the final exercise of exercise Nordic Frost on Camp Ethan Allen Training Site in Jericho, Vt., Jan. 22, 2018. The exercise allowed Marines to demonstrate their ability to operate in a cold weather mountainous environment, conducting land navigation, marksmanship training, demolitions, call for fire training and other core competencies.

Lance Cpl. Nicholas Powell, a Marine with 1st Battalion, 12th Marine Regiment, prepares to throw the Unmanned Aerial System at Marine Corps Training Area Bellows, Hawaii, March 8, 2017. The UAS is mainly used for aerial reconnaissance and can also be used for observation, local security, targeting, and prosecuting. - Lance Cpl. Nicholas Powell, a Marine with 1st Battalion, 12th Marine Regiment, prepares to throw the Unmanned Aerial System at Marine Corps Training Area Bellows, Hawaii, March 8, 2017. The UAS is mainly used for aerial reconnaissance and can also be used for observation, local security, targeting, and prosecuting.

Lance Cpl. Emmitt Aimino, a rifleman with Company C, 1st Battalion, 25th Marine Regiment, 4th Marine Division, secures his snow shoes during exercise Riley Xanten II, in Burwash, Ontario, Feb. 3-5, 2017. During the exercise, the Marines joined soldiers from the Canadian Armed Forces to exchange knowledge and increase proficiency in cold weather tactics, survival skills, shelter building, ice fishing, and more. - Lance Cpl. Emmitt Aimino, a rifleman with Company C, 1st Battalion, 25th Marine Regiment, 4th Marine Division, secures his snow shoes during exercise Riley Xanten II, in Burwash, Ontario, Feb. 3-5, 2017. During the exercise, the Marines joined soldiers from the Canadian Armed Forces to exchange knowledge and increase proficiency in cold weather tactics, survival skills, shelter building, ice fishing, and more.

U.S. Marines with 1st Battalion, 1st Marine Regiment, help one another complete an obstacle during the Frontline Leaders Course at Robertson Barracks, Northern Territory, Australia, Sept. 9, 2016. The course is intended to be an addition to the Marine Corps Lance Corporal’s Seminar, Corporal's Course, and Sergeant's Course. The course instills knowledge and leadership skills to positively impact those under their charge and the future of the Marine Corps. 1st Battalion, 1st Marine Regiment, created the course and this will be the first time the course has been officially conducted. - U.S. Marines with 1st Battalion, 1st Marine Regiment, help one another complete an obstacle during the Frontline Leaders Course at Robertson Barracks, Northern Territory, Australia, Sept. 9, 2016. The course is intended to be an addition to the Marine Corps Lance Corporal’s Seminar, Corporal's Course, and Sergeant's Course. The course instills knowledge and leadership skills to positively impact those under their charge and the future of the Marine Corps. 1st Battalion, 1st Marine Regiment, created the course and this will be the first time the course has been officially conducted.

Pfc. Jeremiah Overton, an artilleryman with Bravo Company, “Black Sheep,” 1st Battalion, 12th Marine Regiment, and a Loraine, Ohio, native, provides security with his M240 Machine Gun for M777 Light Weight Towed Howitzers and their artillerymen during a training exercise at Marine Corps Base Hawaii, Sept. 06, 2016. Marines from Bravo Co., “Black Sheep,” 1st Bn., 12th Marines, participated in exercise Spartan Fury 16.4. Spartan Fury is a pre-deployment exercise in which service members conduct live-fire artillery training and unit leaders are able to further assess and improve the lethality of the battalion. - Pfc. Jeremiah Overton, an artilleryman with Bravo Company, “Black Sheep,” 1st Battalion, 12th Marine Regiment, and a Loraine, Ohio, native, provides security with his M240 Machine Gun for M777 Light Weight Towed Howitzers and their artillerymen during a training exercise at Marine Corps Base Hawaii, Sept. 06, 2016. Marines from Bravo Co., “Black Sheep,” 1st Bn., 12th Marines, participated in exercise Spartan Fury 16.4. Spartan Fury is a pre-deployment exercise in which service members conduct live-fire artillery training and unit leaders are able to further assess and improve the lethality of the battalion.

Lt. Gen. Rex C. McMillian, commander of Marine Forces Reserve, speaks to the Reserve Marines attending Integrated Training Exercise 4-16 at Marine Corps Air Ground Combat Center Twentynine Palms, California, June 19, 2016. Over the two-week period the Marines trained in combined-arms exercises to hone their skills as a Marine Air Ground Task Force, in order to prepare for worldwide deployment and augment the active component. - Lt. Gen. Rex C. McMillian, commander of Marine Forces Reserve, speaks to the Reserve Marines attending Integrated Training Exercise 4-16 at Marine Corps Air Ground Combat Center Twentynine Palms, California, June 19, 2016. Over the two-week period the Marines trained in combined-arms exercises to hone their skills as a Marine Air Ground Task Force, in order to prepare for worldwide deployment and augment the active component.

Marines with 1st Battalion, 2nd Marine Regiment, 2nd Marine Division prepare to launch an attack during the Eager Lion 16 final exercise in Al Quweyrah, Jordan, May 24, 2016. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability. - Marines with 1st Battalion, 2nd Marine Regiment, 2nd Marine Division prepare to launch an attack during the Eager Lion 16 final exercise in Al Quweyrah, Jordan, May 24, 2016. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability.

Members of the Jordanian 77th Marines Battalion engage targets during a squad attacks exercise in Al Quweyrah, Jordan, May 19, 2016. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability. - Members of the Jordanian 77th Marines Battalion engage targets during a squad attacks exercise in Al Quweyrah, Jordan, May 19, 2016. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability.

Sgt. Jose Arroyo, a competitor with the Marine Corps Shooting Team, fires his M16A4 service rifle during the section match May 17, 2016 at Puckapunyal Military Area, Victoria, Australia. The event is part of Australian Army Skill at Arms Meeting 2016, a competitive marksmanship event that evaluates the shooting skills of the competitors. The section match consisted of two running portions and two firing portions where teams were evaluated on both skill and swiftness as a marksman. - Sgt. Jose Arroyo, a competitor with the Marine Corps Shooting Team, fires his M16A4 service rifle during the section match May 17, 2016 at Puckapunyal Military Area, Victoria, Australia. The event is part of Australian Army Skill at Arms Meeting 2016, a competitive marksmanship event that evaluates the shooting skills of the competitors. The section match consisted of two running portions and two firing portions where teams were evaluated on both skill and swiftness as a marksman.

Members of the Jordanian 77th Marines Battalion advance to clear a room during a military operation in urban terrain tactics exercise in Al Quweyrah, Jordan, May 16, 2016. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability. - Members of the Jordanian 77th Marines Battalion advance to clear a room during a military operation in urban terrain tactics exercise in Al Quweyrah, Jordan, May 16, 2016. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability.

Marines with 1st Battalion, 2nd Marine Regiment, 2nd Marine Division arrive at a training area to conduct squad-level exercises in Al Quweyrah, Jordan, May 14. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability. - Marines with 1st Battalion, 2nd Marine Regiment, 2nd Marine Division arrive at a training area to conduct squad-level exercises in Al Quweyrah, Jordan, May 14. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability.