U.S. Marines with 3rd Assault Amphibian Battalion, 1st Marine Division, conduct integrated military operations in urban terrain during Integrated Training Exercise (ITX) 3-21 at Marine Corps Air Ground Combat Center Twentynine Palms, California, April 8, 2021. Marines worked in conjunction with 1st Battalion, 5th Marine Regiment, 1st Marine Division, to secure a mock city to employ the Amphibious Combat Vehicle as part of ITX 3-21. (U.S. Marine Corps video by Lance Cpl. Gabriel Antwiler)

U.S. Marines with 1st Battalion, 5th Marine Regiment, 1st Marine Division, participate in the Combat Athlete Trainer Course at Marine Corps Base Camp Pendleton, California, March 9, 2021. The purpose of the course is to provide infantry squad leaders with the skills necessary to effectively train their Marines on physical fitness. (U.S. Marine Corps video by Cpl. Frank Webb)

15th Marine Expeditionary Unit's Battalion Landing Team, 1st Battalion, 5th Marine Regiment is the strong, flexible, consistent and responsive force tested and proven capable to support any mission that may arise during deployment.

An end of course video production featuring the highlights of Weapons and Tactics Instructor Course (WTI) 2-15 in Yuma, Ariz., from March 8, 2015 to April 26, 2015. WTI is a seven week event hosted by Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) cadre. MAWTS-1 provides standardized tactical training and certification of unit instructor qualifications to support Marine Aviation Training and Readiness and assists in developing and employing aviation weapons and tactics. (U.S. Marine Corps motion imagery by Sgt. Daniel D. Kujanpaa/Released).

KANGAROO FLATS TRAINING AREA, Northern Territory, Australia-Marines with 1st Battalion, 5th Marine Regiment, Marine Rotational Force - Darwin bond with Australian Defence Force cadets by showing them weapons systems and vehicles, here, July 11, 2014. The Australian Army Cadets is a youth development program designed to teach young men and women military leadership skills. The Marines with MRF-D will conduct independent and bilateral training with the Australian Defence Force aboard existing ADF facilities during the six-month rotation.

KANGAROO FLATS TRAINING AREA, Northern Territory, Australia – Marines with Charlie Company, 1st Battalion, 5th Marine Regiment, Marine Rotational Force – Darwin, perform a live-fire range as part of an independent training event to prepare for battalion bilateral exercises in the coming months, here, May 6, 2014. Marines with MRF-D will conduct independent and bilateral training with the Australian Defence Force aboard existing ADF facilities during the six-month rotation.

KANGAROO FLATS TRAINING AREA, Northern Territory, Australia – Marines with 1st Battalion, 5th Marine Regiment, Marine Rotational Force – Darwin, perform a live-fire range during a training exercise, here, May 1, 2014. The Marines with MRF-D will conduct independent and bilateral training with the Australian Defence Force aboard existing ADF facilities during the six-month rotation.

"The goal of this machine is to go where the warfighter goes while carrying the load." — Kevin Blankespoor | chief engineer on the Legged Squad Support System project Marines test the capabilities of the Legged Squad Support System for the first time. Marines with 1st Battalion, 5th Marine Regiment, put the system through its paces at Fort Devens, Mass., Nov. 5-7, 2013. The system, or LS3, is designed to reduce the load Marines carry in combat, can reach speeds of 6 mph and carry up to 400 pounds. The LS3 was created by Boston Dynamics with funding from the Defense Advanced Research Projects Agency (DARPA) and is currently being tested by the Marine Corps. (U.S. Marine Corps video by Sgt. Mike V. Walters)