Army · MOS history

34C Decentralized Automated Service Support System

MOS 34C, Decentralized Automated Service Support System, was deleted and mapped to two successor specialties: 39D, DAS3 Computer Systems Repairer, and 39V, Computerized Systems Maintenance Chief.

Codes named in this history

Historical steps

The source names a code the branch later retired, or whose reviewed record is historical. Its story continues on that code's own page.

Documented history

Decentralized Automated Service Support System

The listed effective date is October 31, 1986. June 26, 1995 is the publication date of the regulation documenting the change.

  • The criteria determining conversion to 39D rather than 39V are not stated.
Source extraction notes

AR 611-201 Table B-2 maps deleted MOS 34C to 39D, 39V; source successor entries: 39D DAS3 Computer Systems Repairer; 39V Computerized Systems Maintenance Chief; update/effective date 1986-10-31.

Source documents (1)

Reviewed September 23, 2026 against references 1 and 2.

Historical information is drawn from the sources linked above. Classification dates are not personal service dates. Spot an error? Let us know.