Infantry: The Army's Land Combat Force

Soldier firing M4 rifle

US Army

Do you want to become a fighting member of the US Army? Consider the 11X recruiting program that pipelines the Army Infantry training program from Basic to your first command. As a recruit and new trainee, the 11x program will challenge you and test your will to see if you can become an Infantryman 11B or "Eleven Bravo." Out of the two 11x options (11B / 11C), most will become 11B as there is more of a need for them in the Army.

You cannot enlist with a guarantee for MOS 11B. Instead, you enlist under the Army's 11X - Infantry Enlistment Option, and during training, you will be designated as either MOS 11B, Infantryman, or MOS 11CIndirect Fire Infantryman.

About the Infantry

The infantry is the main land combat force and backbone of the Army. It's equally important in peacetime and combat. The Infantryman's role is to be ready to defend our country in peacetime and to capture, destroy and repel enemy ground forces during combat.

The 11B Infantryman are riflemen who assist in the performance of reconnaissance operations, employs, fires, and recovers anti-personnel and anti-tank mines. The infantry also:

  • Locates and neutralizes mines.
  • Operates, mounts/dismounts, zeros, and engages targets using night vision sight.
  • Operates and maintains communications equipment and operates in a radio net.
  • Operates in an NBC contaminated area.
  • Constructs field expedient firing aids for infantry weapons.
  • Performs as a member of a fire team during a movement to contact, reconnaissance, and security, an attack, defense, situational training exercises, and all infantry dismounted battle drills.
  • Processes prisoners of war and captured documents.
  • Leads an infantry team in combat operations, providing tactical and technical guidance to subordinates and professional support to both superiors and subordinates in the accomplishment of their duties.
  • Leads, supervises, and trains subordinate personnel.
  • Calls for and adjusts indirect fire.
  • Evaluates terrain and selects weapon emplacement.
  • Controls organic fires.
  • Installs and recovers anti-handing devices on anti-tank mines and electrical and non-electrical demolition charges.
  • Supervises construction of hasty fortifications and receipt, storage, and issue of ammunition.
  • Records operational information on maps.
  • Receives and implements combat orders, directs deployment of personnel in offensive, defensive, and retrograde operations.
  • Requests, observes and adjusts direct supporting fire.
  • Evaluates terrain and supervises the emplacement of sighting and firing all assigned weapons.
  • Uses maps and map overlays performs intersection and resection, and determines elevation and grid azimuths.
  • Leads a fire team during a movement to contact, reconnaissance and security, an attack, defense, situational training exercises, and all infantry dismounted battle drills.

Initial Training in this MOS is primarily conducted through One Station Unit Training (OSUT), which combines basic training and job training into one single course of instruction. OSUT for 11B, Infantryman is 13 weeks, 3 days at Fort Benning, Georgia.

Additional Training Information

Specific formal training opportunities for this MOS, including advanced training courses available at specific points of the soldier's career, can be found on the Army Training Requirements and Resources System (ATRRS) Web Site.


During Basic Training and Advanced Individual Training (AIT), the Army limits a soldier's personal freedom, using a "Phase System," which grants increased freedom, based upon phase of training. For details, see Army Training Phase Restrictions.

Training Details

Job training for Infantryman requires 13 weeks, three days of One Station Unit Training (OSUT) which includes Basic Training and Advanced Individual Training. The training will take place primarily in the field, with some classroom training. Subjects include Landmine warfare, anti-armor techniques, M203 grenade launcher, machine guns, military operations on urban terrain and squad tactical training.

ASVAB Score Required: 90 in aptitude area CO.

Security Clearance: None required

Strength Requirement: very heavy

Physical Profile Requirement: 111221

Other Requirements

  • Color discrimination of red/green.
  • Correctable vision of 20/20 in one eye; 20/100 in other eye.
  • This job is closed to women.

Similar Civilian Occupations

There is no civilian occupation that is directly equivalent to MOS 11B. However, the following civilian occupations make use of the skills developed through MOS 11B training and experience.

  • Security Guards
  • Training and Development Specialists