USMC MOS Descriptions, Weapons, and Platforms

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Manpower Officer

0102 - the principal advisor to commanders on manpower staffing

Intelligence Officers

02XX - Ground, Human Source, Signals or Air Intelligence

Ground Intelligence Officer

0203 - responsible for tactical planning and employment of ground surveillance and reconnaissance units

Human Source Intelligence Officer

0204 - command and/or lead CI/HUMINT units

Signals Intelligence/Ground Electronic Warfare Officer

0206 - Signals Intelligence/Ground Electronic Warfare (SIGINT/EW) Officers command and/or lead SIGINT/EW units

Air Intelligence Officer

0207 - serve as the intelligence functional experts at all command levels of the Marine Air Wing (MAW)

Infantry Officer

0302 - responsible for training their Marines

Logistics Officer

0402 - coordinating the movement of Marines and equipment from ship to shore to forward operating bases

Communications Officer

0602 - responsible for the planning, installation, operation and maintenance of data, telecommunications and computer systems

Field Artillery Officer

0802 - They provide close-fire support for infantry and armored reconnaissance units

Ground Supply Officer

3002 - lead and train Marines in coordinating the equipment and material for mission requirements

Financial Management Officer

3404 - in charge of financial issues, such as managing budgets and disbursing operations

Public Affairs Officer

4302 - answer questions and inform the media of Marine Corps stories and events

Judge Advocate

4402 - responsibilities of maintaining your own caseload and advising Marines on legal issues

Military Police Officer

5803 - provide essential support to their commanding officers with all facets of law enforcement

Aviation Maintenance Officer

6002 - supervise the maintenance of aircraft and aviation equipment

Aviation Supply Officer

6602 - make critical decisions concerning budget, inventory management, deployment, personnel and other support matters. They serve in the Aviation Supply Department at any one of the 11 different Marine Aviation Logistics Squadrons (MALS)

Aviation Command & Control

72XX - Air Support Control Officers, Air Defense Control Officers or Air Traffic Control Officers

Low Altitude Air Defense

7204 - assist commanders in commanding Ground Based Air Defense (GBAD) units, coordinate tactical employment of LAAD units through air command and control agencies, sensors, and other air defense weapons

Air Support Control Officers

7208 - plan, direct, and coordinate air support missions in support of MAGTF operations

Air Defense Control Officers

7210 - direct aircraft and surface to air missile assets for the interception of hostile aircraft and missiles

Air Traffic Control Officers

7220 - ATC Officer serves as watch commanders or detachment commanders at an expeditionary ATC detachment

M4 Carbine (Function)

Infantry Weapon—less weight and shorter barrel than the M16 making it a more appropriate weapon for shorter distances and confined spaces.

M4 Carbine (Range)

Effective Range: Area TGT – 600 meters, Point TGT – 500 meters

M4 Carbine (Image)

M203 40mm Grenade Launcher (Function)

A single-shot, 40mm grenade launcher that attaches to the M16A4 assault rifle and the M4 Carbine. When targets cannot be accessed by direct fire, Marines use the Grenade Launcher attachment to engage enemies. Typically, this weapon is carried by either the Fire Team’s Grenadier or Fire Team Leader.

M203 40mm Grenade Launcher (Range)

Effective Range: Area TGT - 350m, Point TGT - 150 meters

M203 40mm Grenade Launcher (Image)

M27 Infantry Automatic Rifle (IAR) (Function)

An automatic weapon that delivers accurate suppressive fires in support of the Fire Team. It is a lightweight, magazine-fed 5.56mm weapon. Is intended to enhance an automatic rifleman’s maneuverability and displacement speed.

M27 Infantry Automatic Rifle (IAR) (Range)

Effective Range: Area TGT 800m, Point TGT 550m

M27 Infantry Automatic Rifle (IAR) (Image)

M240B Medium Machine Gun (Function)

Provides Marines with a continuous and high rate of fire to engage long-range targets. It is a heavier automatic weapon than the M249 but provides a faster rate of fire and a longer effective range. Typically, the tripod is employed when the weapon is to be used for defensive situations, or when precise fire is needed in support of maneuver units. The bipod is always attached and is suitable for use while patrolling

M240B Medium Machine Gun (Range)

Maximum effective range with tripod: 1,800 meters

Maximum range: 3,725 meters

Can be mounted on tanks and light armored vehicles

M240B Medium Machine Gun (Image)

M777 Howitzer (Function)

Provides timely, accurate, and continuous firepower in support of Marine Infantry forces.

Able to be lifted externally by both the MV-22 Osprey and CH-53E Super Stallion.

M777 Howitzer (Image)

High Mobility Multipurpose Wheeled Vehicle (HMMWV) (Function)

Multipurpose vehicles, serving functions like command and control, troop transport, shelter carrier, towed weapons mover, armament carrier, TOW missile system carrier and even ambulance.

High Mobility Multipurpose Wheeled Vehicle (HMMWV) (Image)

Joint Light Tactical Vehicle (JLTV) (Function)

Aim to improve the mobility and payload of the light tactical vehicles while providing increased survivability.

Transportable by fixed and rotary wing aircraft, scalable crew system, automatic fire protection system, fully integrated Command, Control, Communications, Computers, Intelligence, Surveillance and Reconnaissance (C4ISR) capabilities, 3500-5100lbs payload, adaptable capabilities for multiple mission sets

Joint Light Tactical Vehicle (JLTV) (Image)

M142 High Mobility Artillery Rocket System (HIMARS) (Function)

Marine Corps’ most advanced artillery system, accurately engaging targets over great distances under all weather conditions. With high volumes of lethal rocket and missile fire, delivers precise strikes from over 40 miles away

Munitions are accurate within 26 feet; Six tubes hold 200-pound rockets; Crew of three Marines; 24,000 pounds; Fires M270 artillery rockets and anti-aircraft missiles; Ready to fire within 15 minutes of being unloaded

M142 High Mobility Artillery Rocket System (HIMARS) (Image)

Amphibious Assault Vehicle (AAV)-7 (Function)

Designed to assault any shoreline from the well decks of Navy assault ships, highly mobile, tracked armored amphibious vehicles that transport Marines and cargo

Typically, the first vehicles to land during beach raids and assaults; All-welded aluminum hull protects crew from small arms fire; Eight smoke grenade launchers; Turret armed with .50 cal machine gun and 40mm grenade launcher; Can be outfitted with Mine Clearance Line Charges; Operates at speeds of 45mph on land; 8-10 knots in water; Can carry 21 combat-loaded Marines and 3 crewmembers; Can transport 10,000 pounds of cargo; Can fire on land and water; Enough fuel to drive 300 miles inland.

Amphibious Assault Vehicle (AAV)-7 (Image)

AH-1Z Super Cobra/Viper (Function)

Provided cover for advancing ground forces or escorting assault support helicopters *enroute* to a landing zone

Able to project multiple missiles, rockets and 20mm cannon fire

Why Marine Aviation has been called ‘flying artillery.’

AH-1Z Super Cobra/Viper (Image)

UH-1Y Huey/Venom (Function)

Outfitted with door-mounted .50 caliber and 7.62 machine guns

Features cockpit avionics, a satellite data link network, and 50% increase in range and speed over the aircraft it replaced in 2014. Now, with a 125% boost in payload and the power to keep up with the larger helicopters they escort.

UH-1Y Huey/Venom (Image)

CH-53E Sea Stallion/Super Stallion Helicopter (Function)

Can carry a 26,000-pound Light Armored Vehicle, 16 tons of cargo 50 miles and back, or enough combat-loaded Marines to lead an assault or humanitarian operation

Armed with window-mounted .50-caliber machine guns, chaff and flare dispensers for anti-air defense, an in-flight refueling probe for limitless range and a forward-looking infrared (FLIR) imager for night and all-weather navigation.

CH-53K King Stallion: The CH-53K is the planned replacement for this ageing aircraft. First deployment will likely be in 2023 or 2024

CH-53E Sea Stallion/Super Stallion Helicopter (Image)

MV-22 Osprey Tiltrotor (Function)

Ability to carry 24 Marine combat troops twice as fast and five times farther than previous helicopters

Designed for expeditionary assault, raid operations, cargo lift and special warfare

MV-22 Osprey Tiltrotor (Image)

F/A-18 Hornet (Function)

Used for fighter escort, enemy air defense suppression, reconnaissance, air control and the calling card of Marine Aviation: close air support

External and internal weapon stations able to deliver Sparrow, AMRAAM and Sidewinder air-to-air missiles, air-to-ground munitions in the form of Harpoon and Maverick missiles, general purpose, cluster and laser-guided bombs, and a 6-barrel 20mm gun in the nose section

F/A-18 Hornet (Image)

F-35B Lightning II (Function)

Is the replacement for the aging F/A-18A/C

The Marine Corps is the first service to stand-up an operational squadron. In addition to the B-Variant, Marine pilots also fly the Navy C-Variant and deploy as part of a Carrier Air Wing.

F-35B Lightning II (Image)