Army · MOS history

13E3 Cannon Fire Direction Specialist

Converted to 13D, dated October 1, 2013 by the source.

Search legacy codes Browse Army specialties

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.

13DField Artillery Automated Tactical Data System Specialist · historical code
Recorded successor: 13J Fire Control Specialist, also listed in today's directory

Documented history

Cannon Fire Direction Specialist

DA Pam 611-21 Table 10-4 maps predecessor MOSC 13E3 to 13D; source successor entries: 13D FIELD ARTILLERY AUTOMATED TACTICAL DATA SYSTEM SPECIALIST; conversion effective 01 Oct 2013.

Source documents (1)

DA Pam 611-21, chapter 10, Table 10-4, Enlisted MOS Conversion Listing
1. Table 10-4, PDF p. 225 · source dated 2025
PDF page 225 (opens in a new tab)

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