Infantry Mos In Marines

The United States Marine Corps is known for its elite infantry force, which is the backbone of the organization. The infantry Military Occupational Specialties (MOS) in the Marines are designed to provide the necessary training and expertise for Marines to engage in ground combat operations. These MOS are categorized into several fields, each with its unique responsibilities and requirements. In this article, we will delve into the different infantry MOS in the Marines, their roles, and the skills required to excel in these positions.

Infantry MOS Fields

The Marine Corps infantry is divided into several fields, including rifleman, machine gunner, mortarman, assaultman, and sniper. Each field has its specific MOS, which are further categorized into different specialties. For instance, the rifleman field includes MOS such as 0311 (Rifleman), 0331 (Machine Gunner), and 0341 (Mortarman). These specialties require Marines to possess specific skills, such as marksmanship, first aid, and combat tactics.

Rifleman (MOS 0311)

The rifleman is the most common infantry MOS in the Marines. Riflemen are responsible for engaging enemy forces using rifles, machine guns, and other infantry weapons. They are also trained in combat tactics, first aid, and map reading. To become a rifleman, Marines must complete the Infantry Training Battalion (ITB) and possess a high level of physical fitness. According to the Marine Corps’ data, the average rifleman must be able to perform 44 push-ups, 59 sit-ups, and run 3 miles in 28 minutes or less.

Machine Gunner (MOS 0331)

Machine gunners are responsible for operating and maintaining machine guns, such as the M240 and M2.50-caliber machine guns. They are also trained in combat tactics, leadership, and first aid. Machine gunners play a critical role in providing suppressive fire and supporting infantry units during combat operations. According to the Marine Corps’ doctrine, machine gunners must be able to engage targets at ranges of up to 1,500 meters and provide sustained rates of fire.

Mortarman (MOS 0341)

Mortarmen are responsible for operating and maintaining mortars, such as the M224 60mm mortar. They are also trained in combat tactics, map reading, and first aid. Mortarmen provide indirect fire support to infantry units during combat operations. According to the Marine Corps’ data, mortarmen must be able to deliver accurate and timely fire support, with a circular error probable (CEP) of 10 meters or less.

Assaultman (MOS 0351)

Assaultmen are responsible for breaching and clearing buildings, rooms, and other enclosed spaces. They are also trained in combat tactics, explosives, and first aid. Assaultmen play a critical role in supporting infantry units during urban warfare and counterinsurgency operations. According to the Marine Corps’ doctrine, assaultmen must be able to breach and clear buildings using a variety of techniques, including explosive breaching and mechanical breaching.

Sniper (MOS 0317)

Snipers are responsible for providing precision fire support to infantry units during combat operations. They are trained in marksmanship, camouflage, and concealment. Snipers play a critical role in supporting infantry units during reconnaissance and surveillance operations. According to the Marine Corps’ data, snipers must be able to engage targets at ranges of up to 1,000 meters, with a first-round hit probability of 90% or higher.

Meta Description: Discover the different infantry MOS in the Marines, including rifleman, machine gunner, mortarman, assaultman, and sniper. Learn about the roles, responsibilities, and required skills for each MOS.