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USA11C

Indirect Fire Infantryman

Operates mortars and associated fire control equipment to provide indirect fire support for infantry units. Serves as a member of a mortar squad, section, or platoon.

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Recruiter vs. Reality
What they tell you

As an Indirect Fire Infantryman, you'll operate advanced mortar systems to deliver precision fire support. You'll master ballistic calculations, coordinate combined arms operations, and develop analytical skills valued in defense contracting and engineering fields.

What it's actually like

You're an 11B who carries a tube instead of extra ammo, and both sides will remind you of this constantly. The infantry doesn't fully claim you. The artillery doesn't even know you exist. You'll hump a baseplate up a mountain that Google Maps says is a 'gentle slope' and call it 'light training.' Your 'precision ballistics' means hanging rounds in freezing rain at 0200 while some butter bar on the radio keeps changing the fire mission like he's adjusting his fantasy football lineup. When it works — when you drop rounds danger close and the grunts on the ground radio back with nothing but heavy breathing and gratitude — there is no better sound on earth. You'll hear 'hang it, fire' in your sleep for the rest of your life. You'll miss it.

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MOS Intel

ClearanceSecret
|
PromotionSlow
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Deploy TempoHigh
|
BonusUp to $50,000
Career Intel
Duty StationsFort Liberty (NC) · Fort Cavazos (TX) · Fort Campbell (KY) · JBLM (WA) · Fort Drum (NY)
Daily LifePT at 0630, mortar live-fire exercises, fire direction center drills, and a lot of physical conditioning. Garrison time is split between the mortar pit and the same cleaning details every infantryman knows. Field problems are frequent and you hump the heaviest loads in the platoon.
AIT / SchoolOSUT at Fort Moore (GA) is 22 weeks — same pipeline as 11B with mortar-specific training in the final phase. You learn the M224 (60mm), M252 (81mm), and M120 (120mm) mortar systems plus fire direction calculations. The math matters more than the recruiter lets on.
Physical DemandsExtremely high. You carry everything an 11B carries plus mortar base plates, tubes, and rounds that weigh 35-45 lbs each. Rucking loads routinely exceed 80 lbs. Your knees and back will know it.
Deployments9-month rotations with infantry BCTs to Europe, Korea, and the Middle East
Certifications
AirborneAir AssaultRanger Tab (if selected)Combat LifesaverMortar Leader's Course
Pro Tips
  1. 1Learn the FDC (Fire Direction Center) side as soon as possible. FDC soldiers are the brains of the mortar section and it makes you indispensable and promotable.
  2. 2Volunteer for Ranger School — the tab carries the same weight it does for 11Bs and separates you from the pack.
  3. 3Protect your hearing religiously. Mortar systems are louder than most people realize and tinnitus is nearly universal among mortarmen.
The Honest Truth

The recruiter will lump you in with infantry and that's technically correct — you are an infantryman. What they won't explain is that 11C is the forgotten middle child of the infantry world. You carry heavier loads than riflemen, do more math than anyone expects, and when there's no mortar training happening, you get pulled for every detail and working party on the FOB. The upside: mortar crews are tight-knit teams with a real sense of ownership over their weapon system, and a well-run mortar section is genuinely devastating. The downside: promotion is just as glacially slow as 11B, the physical toll is arguably worse because of the loads, and the civilian translation is essentially nonexistent unless you pivot to something else. If you love indirect fire and want to be infantry, it's a rewarding MOS — just go in knowing the costs.

Training Pipeline
1
BCT10w
Fort Jackson (SC) or Fort Moore (GA)
2
AIT8w
Fort Moore (GA)
Indirect fire training — mortar crew operations, fire direction control, aiming circle.
On the Outside

What this actually is in the real world

Your skills translate. Here's what civilian employers call this job — and what they pay.

Police and Sheriff's Patrol Officers

Strong match
$72,280$47,430$113,040/yr median
Job market: Faster than average (5%)

Security Guards and Gambling Surveillance Officers

Related field
$33,750$23,380$54,710/yr median
Job market: Average (3%)

Emergency Management Directors

Stretch
$79,180$53,580$130,590/yr median
Job market: Average (3%)

Salary data from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program, retrieved Feb 2026. BLS.gov cannot vouch for the data or analyses derived from these data after the data have been retrieved from BLS.gov.

Selective Reenlistment Bonus (SRB)
$5,100SGT · 36-month contract · as of 2020-10-15
Location-specific bonuses (current)
$10,500 SFAB
SGT rank, 36-month contract · Source: MILPER messages · Data gaps where PDFs unavailable
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