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Army MOS · Engineering

12T Technical Engineer

Current service use not established

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

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Overview

A Technical Engineer supervises or participates in construction site development through technical investigations, surveying, and drafting. This specialist develops construction plans and specifications and performs quality control inspections.

Minimum ASVAB: ST 101

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-19

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: smartbook-611-21-ch10c-fy2025 (source date 2025-12). Policy applicability has not been established.

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Core Skills

  • Construction site investigation and surveying
  • Construction plan and specification development
  • Construction quality control inspections

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.

Civil Engineering Technologists and Technicians

12T construction-site investigation, drafting, plan development, and quality control inspections align directly with civil engineering technician work.

How to prepare: Create a sample construction-site drawing in Autodesk AutoCAD Civil 3D with dimensions and a specifications sheet.

What the civilian work involves
  • Draft detailed dimensional drawings and design layouts for projects to ensure conformance to specifications.
  • Confer with supervisor to determine project details such as plan preparation, acceptance testing, and evaluation of field conditions.
  • Analyze proposed site factors and design maps, graphs, tracings, and diagrams to illustrate findings.
Civilian tools and software (examples)
  • Autodesk AutoCAD
  • Autodesk AutoCAD Civil 3D

Surveying and Mapping Technicians

12T surveying for construction-site development provides a direct foundation for civilian survey fieldwork.

How to prepare: Practice turning survey measurements into a site map in Autodesk AutoCAD Civil 3D, checking the finished map for errors.

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.
Civilian tools and software (examples)
  • Autodesk AutoCAD Civil 3D
  • ESRI ArcGIS software

Notes & Sources

Evidence for this guidance (3 documents)
  1. Army COOL MOC feed: 12T Technical Engineer

    [1] data/authority/army-codes.json entry 12T (OSD COOL feed, fetched 2026-07-25); DB rank enlisted, authority codeType enlisted

    Supports: Construction site investigation and surveying, Construction plan and specification development, Construction quality control inspections, Civil Engineering Technologists and Technicians (O*NET 17-3022.00), Surveying and Mapping Technicians (O*NET 17-3031.00)

  2. O*NET: Civil Engineering Technologists and Technicians

    [2] O*NET 30.3 occupational data

    Supports: Civil Engineering Technologists and Technicians (O*NET 17-3022.00)

  3. O*NET: Surveying and Mapping Technicians

    [3] O*NET 30.3 occupational data

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

Defense contractor jobs for 12T

Predecessor codes

Historical codes with documented links to 12T. Each history page explains the change.

21T1Technical Engineer21T2Technical Engineer21T3Technical Engineer21T4Technical Engineer

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

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