MOS comparison

11B vs 11C: ASVAB score and role difference.

Compare 11B Infantryman with 11C Indirect Fire Infantryman: AFQT floor, line-score requirement, training length, and source freshness.

As of 2026-06-17, 11B Infantryman requires CO 77 and 11C Indirect Fire Infantryman requires CO 87 — a 10-point CO gap — with both sharing the Army AFQT floor of 31 and about 22 weeks of initial training. Line scores are job-specific composites, not the overall AFQT percentile.

Last verified 2026-06-17 · sources cited below.

Quick answer

The score gap is small; the day-to-day job is not.

Shared entry path

Both are Army infantry MOS pages and both connect back to the 11X infantry path in the underlying job notes.

Line-score difference

11B lists CO 77; 11C lists CO 87.

Best next check

Use your AFQT and CO line score together; AFQT alone does not confirm either MOS.

Side by side

11B vs 11C requirements.

Minimum AFQT

11B

31

11C

31

Army floor used by both pages

Line score

11B

CO 77

11C

CO 87

11C is 10 points higher on CO

Training length

11B

~22 weeks

11C

~22 weeks

OSUT at Fort Moore (formerly Fort Benning), Georgia

Primary role

11B

Army Infantryman is the close-combat MOS in the U.S. Army. 11B Soldiers operate as the Army's primary land combat force.

11C

Army Indirect Fire Infantryman (11C), the mortarman, operates and fires mortar systems that deliver indirect fire support for infantry units, computing firing data and emplacing the gun line.

Role summaries come from each MOS row

Source freshness

11B

Army MOS 11B specification — DA PAM 611-21 Ch.10 (PDF) · last verified 2026-06-17

11C

goarmy.com — Indirect Fire Infantryman (11C) · last verified 2026-05-23

Every number links to its source below

Choose the next page

Open the full MOS page before making a score plan.

Recruiter check

Confirm the final MOS and line score on your enlistment paperwork.

This page compares cited public data. Actual availability, assignment timing, and current recruiting rules can change, so treat the score comparison as a prep tool and confirm the final requirement with a recruiter.

11B vs 11C FAQ

Common 11B vs 11C ASVAB questions.

What ASVAB score do you need for 11B vs 11C?
11B Infantryman lists CO 77; 11C Indirect Fire Infantryman lists CO 87. Both also require the Army AFQT floor of 31. Line scores are job-specific composites, not the overall AFQT percentile. Last verified 2026-06-17 (11B) and 2026-05-23 (11C).
Is 11C harder to qualify for than 11B?
On paper 11C is the higher bar: it lists CO 87 versus 11B at CO 77 — a 10-point CO gap. Both still require the Army AFQT floor of 31, and combat line-score minimums are periodically adjusted, so confirm the current figure for each on your enlistment contract.
Do 11B and 11C use the same ASVAB line score?
Yes. Both 11B and 11C qualify on the CO line score, so the same ASVAB subtests drive eligibility for either MOS — prep that targets CO helps both.
How long is training for 11B vs 11C?
11B runs about 22 weeks and 11C about 22 weeks — both OSUT at Fort Moore (formerly Fort Benning), Georgia. Training length is initial-entry only and does not include follow-on schools.

Sources