mos.directory

Army MOS · Engineering

12Z Combat Engineering Senior Sergeant

Current service use not established

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

Browse Army

Overview

Combat Engineering Senior Sergeants inspect and advise on bridging, rafting, river crossings, construction, assault operations, and ground and aerial reconnaissance. They coordinate engineer support and the employment of engineer elements, enforce construction and safety standards, and collect, analyze, evaluate, and disseminate intelligence data.

Core Skills

  • Bridging, rafting, and river-crossing inspection
  • Construction schedule development and maintenance
  • Construction specification and safety enforcement
  • Ground and aerial reconnaissance

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.

Construction Site Supervisor

Maintaining construction schedules and inspecting sites for specification and safety compliance directly support civilian construction supervision.

How to prepare: Build a sample civilian construction schedule in Microsoft Project that includes work sequencing and specification and safety inspection checkpoints.

What the civilian work involves
  • Inspect work progress, equipment, or construction sites to verify safety or to ensure that specifications are met.
  • Supervise, coordinate, or schedule the activities of construction or extractive workers.
  • Coordinate work activities with other construction project activities.
Civilian tools and software (examples)
  • Microsoft Project
  • Microsoft Excel

Civil Engineering Technologists and Technicians

Construction-site specification inspections and ground and aerial reconnaissance provide a foundation for evaluating field conditions and reviewing project specifications.

How to prepare: Complete a civil CAD course and produce a dimensioned site drawing with a material-quantity worksheet.

What the civilian work involves
  • Read and review project blueprints and structural specifications to determine dimensions of structure or system and material requirements.
  • Confer with supervisor to determine project details such as plan preparation, acceptance testing, and evaluation of field conditions.
Civilian tools and software (examples)
  • Autodesk AutoCAD
  • Microsoft Excel

Notes & Sources

Evidence for this guidance (3 documents)
  1. Army COOL MOC feed: 12Z Combat Engineering Senior Sergeant

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

    Supports: Bridging, rafting, and river-crossing inspection, Construction schedule development and maintenance, Construction specification and safety enforcement, Ground and aerial reconnaissance, Construction Site Supervisor (O*NET 47-1011.00), Civil Engineering Technologists and Technicians (O*NET 17-3022.00)

  2. O*NET: First-Line Supervisors of Construction Trades and Extraction Workers

    [2] O*NET 30.3 occupational data

    Supports: Construction Site Supervisor (O*NET 47-1011.00)

  3. O*NET: Civil Engineering Technologists and Technicians

    [3] O*NET 30.3 occupational data

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

Defense contractor jobs for 12Z

Predecessor codes

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

21Z5Combat Engineering Senior Sergeant

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