Army · MOS history
Converted to 74C, dated October 1, 1990 by the source.
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.
Recorded successor: 25D Cyber Network Defender, also listed in today's directory
Tac Tel Cen OP
DA Pam 611-21 Table 10-4 maps predecessor MOSC 72E4 to 74C; source successor entries: 74C TELECOMMUNICATIONS OPERATOR-MAINTAINER; conversion effective 01 Oct 1990.
1. Table 10-4, PDF p. 280 · source dated 2025
PDF page 280 (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.