U.S. Army · Combat Arms
As of August 6, 2026, Army 13F Joint Fire Support Specialist requires GT 87 plus the Army AFQT floor of 31. Current Army recruiting pages list 10 weeks of Basic Combat Training followed by about 10 weeks of 13F Advanced Individual Training at Fort Sill, where Soldiers learn target-location, communications, and artillery-support skills.
13F (Joint Fire Support Specialist), spoken “13 Fox”, is in the Army and requires a minimum AFQT of 31 and GT of at least 87. Last verified 2026-08-06 against Army DA Pam 611-21 Chapter 10C — MOS 13F specification (PDF).
Quick check
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Plain requirement
AFQT 31 is a percentile. The line score above is not — it is an Army composite, a weighted sum of your ASVAB subtest standard scores (GT = VE + AR — per goarmy.com (ASVAB line scores), verified 2026-07-31). Work yours out from your score sheet with the Army ASVAB line score calculator.
Source: Army DA Pam 611-21 Chapter 10C — MOS 13F specification (PDF) · last verified 2026-08-06.
Role brief
As of August 6, 2026, Army 13F Joint Fire Support Specialist requires GT 87 plus the Army AFQT floor of 31. Current Army recruiting pages list 10 weeks of Basic Combat Training followed by about 10 weeks of 13F Advanced Individual Training at Fort Sill, where Soldiers learn target-location, communications, and artillery-support skills.
Initial training
GoArmy lists 10 weeks of Basic Combat Training followed by 10 weeks of Advanced Individual Training. The Army National Guard 13F career page gives the AIT duration as 10 weeks and four days at Fort Sill, with classroom and field instruction in target-location, communications, ammunition, and artillery-support skills.
Source: goarmy.com — Joint Fire Support Specialist (13F) · last verified 2026-08-06 · date retrieved 2026-08-06.
Starting pay · 2026
Base pay is set by pay grade, not by job — every Army enlistee at the same grade earns the same monthly base pay. These are the 2026 active-duty rates (3.8% raise, effective 2026-01-01).
| Grade | Rank | Monthly base pay | Service |
|---|---|---|---|
| E-1 | Private (PV1) | $2,407 | after 4 months of service |
| E-2 | Private (PV2) | $2,698 | under 2 years |
| E-3 | Private First Class (PFC) | $2,837 | under 2 years |
| E-4 | Specialist / Corporal | $3,142 | under 2 years |
Source: DFAS 2026 active-duty basic pay tables (3.8% raise, effective Jan 1 2026) · last verified 2026-05-23 · date retrieved 2026-05-23.
Eligibility notes
Yes — they are the same job. 13F is the Army Joint Fire Support Specialist MOS; "13 Fox" is how the code is said aloud, spelling the trailing "F" with the NATO phonetic alphabet (the Army usually shortens the NATO word "Foxtrot" to "Fox"). Whether you search "13F" or "13 Fox", the requirement on this page is the same: AFQT 31 and GT of at least 87.
For Army 13F Joint Fire Support Specialist, the current Army MOS specification lists GT 87, plus the Army AFQT floor of 31. GT is a line score, not the same thing as the AFQT percentile.
The current Army 13F specification reviewed on 2026-08-06 lists GT 87. Older National Guard and third-party tables still show FA scores, so confirm the current line-score code on your recruiter score sheet or enlistment contract.
If your 13F requirement is GT 87, focus on Verbal Expression and Arithmetic Reasoning. Verbal Expression comes from Word Knowledge and Paragraph Comprehension; Arithmetic Reasoning is its own ASVAB subtest.
The Army MOS specification also lists normal color vision, SECRET security eligibility, U.S. citizenship, and mandatory formal training. A recruiter confirms current openings and the full medical/background screen.
GoArmy lists 10 weeks of 13F Advanced Individual Training after 10 weeks of Basic Combat Training. The Army National Guard gives the AIT duration as 10 weeks and four days at Fort Sill, Oklahoma. Confirm the dates on your current training reservation because schedules can change.
The current GoArmy page says applicants enlist as Field Artillery Soldiers (13U), then receive a specific 13-series MOS assignment based on available Army opportunities and skills assessed during Basic Combat Training. Confirm the job-selection language in your enlistment contract with a recruiter.
Source: Army DA Pam 611-21 Chapter 10C — MOS 13F specification (PDF) · last verified 2026-08-06 · date retrieved 2026-08-06.
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