mos.directory

Marine Corps MOS · Combat & Infantry

0341 Mortarman

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

Browse Marine Corps

Overview

A mortarman tactically employs light and medium mortar systems to provide indirect fire for rifle and light armored reconnaissance units. Noncommissioned officers serve as mortar gunners, forward observers, fire direction plotters, and squad or section leaders.

Minimum ASVAB: CL 90 or GT 90

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-18

Program scope has not been reviewed.

Policy applicability and coverage of the program's score routes have not been reviewed. Shown-route arithmetic is not an eligibility decision.

Source: navmc-1200-1l-fy26 (source date 2025-03). Policy applicability has not been established.

See if you would hit this score: free ASVAB practice test

Core Skills

  • Fire direction plotting in NCO assignments
  • Forward observation in NCO assignments

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Surveying and Mapping Technicians

For mortarmen who served as fire direction plotters, plotting experience provides a foundation for civilian surveying and mapping work.

How to prepare: Take an introductory surveying course with practical exercises in measuring angles, distances, and elevations and checking map accuracy.

What the civilian work involves
  • Position and hold the vertical rods, or targets, that theodolite operators use for sighting to measure angles, distances, and elevations.
  • Check all layers of maps to ensure accuracy, identifying and marking errors and making corrections.
  • Produce or update overlay maps to show information boundaries, water locations, or topographic features on various base maps or at different scales.
Civilian tools and software (examples)
  • ESRI ArcGIS software

Notes & Sources

Evidence for this guidance (2 documents)
  1. NAVMC 1200.1L (FY26, in force): MOS 0341

    [1] MOS 0341 section "a. Summary"; cached text line 27995; NAVMC 1200.1L signed 2025-03-07, in force until 2026-10-01

    Supports: Fire direction plotting in NCO assignments, Forward observation in NCO assignments, Surveying and Mapping Technicians (O*NET 17-3031.00)

  2. O*NET: Surveying and Mapping Technicians

    [2] O*NET 30.3 occupational data

    Supports: Surveying and Mapping Technicians (O*NET 17-3031.00)

Defense contractor jobs for 0341

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

Report an error on this page