Army MOS · Engineering
12A Engineer
Current service use not established
This code is listed in the directory. Inclusion alone does not confirm current service use.
Overview
An Engineer provides general engineering expertise to Army activities. Most positions serve Department of the Army, Department of Defense, Joint Staff, major command, or field activities.
Core Skills
- Engineering support to Army and joint staffs
Notes & Sources
- Verified duties describe general engineering expertise in staff settings but do not establish civil design or construction experience sufficient to recommend a specific civilian path.
Evidence for this guidance (1 document)
- Army COOL MOC feed: 12A Engineer
[1] data/authority/army-codes.json entry 12A (OSD COOL feed, fetched 2026-07-25); DB rank officer, authority codeType officer
Supports: Engineering support to Army and joint staffs
Predecessor codes
Historical codes with documented links to 12A. Each history page explains the change.
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