Marines with Bravo Company, 1st Battalion, 24th Marine Regiment, 4th Marine Division, conduct training and readiness manual tasks during annual training in Camp Grayling, Mich., Aug. 20, 2020. The training and readiness manual is the Marine Corps’ primary tool for the planning, execution, and evaluation of training, and assessing unit readiness to go, fight and win our nation's battles. (U.S. Marine Corps video by Lance Cpl. Samwel Tabancay)

Marines with Bravo Company, 1st Battalion, 24th Marine Regiment, 4th Marine Division, demonstrate the different weapon systems used during their annual training at Camp Grayling, Mich., Aug. 18, 2020. The training and readiness manual gives guidance on the equipment, ammunition, ranges and support requirements to plan and execute effective training to increase Marines’ lethality. (U.S. Marine Corps video by Lance Cpl. Samwel Tabancay)

U.S. Marines with Charlie Company, Infantry Training Battalion, School of Infantry - West, train with the M67 fragmentation grenade at Range 202 on Marine Corps Base Camp Pendleton, California, May 26, 2020. The Marines learned the characteristics and the tactical employment of the fragmentation grenade during this training evolution. ITB trains, develops and certifies Marines as riflemen, as well as their primary military occupational specialty within the infantry field, before sending them to join the Fleet Marine Force (U.S. Marine Corps video by Lance Cpl. Melissa I. Ugalde)

U.S. Marines assigned to Headquarters Battery, 12th Marine Regiment, 3rd Marine Division, practice throwing grenades at Camp Hansen in Okinawa, Japan, Feb. 26, 2020. The Marines conducted the grenade training to ensure every Marine is confident with the execution of throwing a grenade. This training also allows the unit to maintain their proficiency and combat lethality with M67 grenades. (U.S. Marine Corps video by Cpl. Brandon Salas)

More than 70 Marines with 2nd Low Altitude Air Defense Battalion participated in a grenade and grenade launcher range at Marine Corps Base Camp Lejeune, N.C., Oct. 28.

More than 70 Marines with 2nd Low Altitude Air Defense Battalion participated in a grenade and Grenade Launcher range at Marine Corps Base Camp Lejeune, N.C., Oct. 28.

Marines with Engineer Support Company, 8th Engineer Support Battalion, 2nd Marine Logistics Group conducted a live-fire grenade range aboard Marine Corps Base Camp Lejeune, North Carolina, March 27, 2015. The training gave the company’s new Marines the opportunity to get hands on experience with the M67 fragmentation grenade and allowed other Marines in the company the opportunity to rehearse their skills with handling live explosives.

Marines from 2nd Battalion, 6th Marine Regiment, 2nd Marine Division completed their Agoge combat training at Camp Lejeune, N.C., August 2014. The Agoge, originally used to train the next generation of ancient Spartan warriors, immerses the Marines in a simulated combat environment, where every hour is dedicated to training for the art of war. The battalion spent several days conducting mock offensive and defensive operations in the field. During the week and a half of training, Marine advisers ran the unit’s personnel through a series of combat simulations. In this, the training’s culminating event, the Marines conducted helicopter insertion and extraction drills and assaulted enemy positions. The live-fire event allowed the unit to test its ability to use combined-arms warfare and fire-and-maneuver tactics. The battalion used a CH-53E Super Stallion helicopter, capable of long range refueling, during the training. They also utilized AT4 antitank rockets, M203 grenade launchers, and the M67 fragmentation grenade during the course of fire. Available in high definition Interview: Lcpl Max Chianese, Team Leader, 2nd Battalion, 6th Marine Regiment. Also available in high definition.

U.S. Marines with the 15th Marine Expeditionary Unit conduct a small-arms training exercise at Range 111 aboard Camp Pendleton, Calif., Nov. 25. The training focused on enhancing the unit's confidence and proficiency with personal weapons and M67 Fragmentation Hand Grenades. (U.S. Marine Corps video and photos by Cpl. Emmanuel Ramos/Released)