11B

11B, Infantryman, is an enlisted Military Occupational Specialty (MOS) in the United States Army. Infantrymen are the primary light infantry force, trained for offensive and defensive ground combat, patrols, reconnaissance, and security operations. They serve in infantry units across the army, including light, airborne, air assault, and mechanized formations.

Training: Recruits undergo Basic Combat Training (BCT) followed by One Station Unit Training (OSUT) at Fort Moore, Georgia, which combines BCT and Infantry Advanced Individual Training to award the 11B MOS. After training, soldiers are assigned to infantry units where they perform tasks such as patrolling, movement techniques, small-unit tactics, and weapons handling.

Duties and equipment: Infantrymen employ standard infantry weapons, most commonly the M4 carbine, and may operate supporting weapons such as the M249 SAW, M240B machine gun, and the M2 .50-caliber machine gun. They also use grenades, anti-armor tools, radios, and night-vision devices. Infantry operations include offensive assaults, defensive fortifications, reconnaissance, and casualty care at the unit level.

Career and progression: Entry ranks range from E-1 to E-4, with progression to noncommissioned officer ranks such as sergeant and staff sergeant. Crew and squad leadership responsibilities increase with rank, including team leader and squad leader duties. Additional qualifications and opportunities include Airborne School, air assault, Ranger School, and the Expert Infantryman Badge (EIB) for eligible infantrymen.

Insignia: The 11B Infantryman MOS uses the infantry insignia of crossed rifles.