Army · MOS history

74C3 Telecommunications Operator-Maintainer

Converted to 25D, dated January 1, 2005 by the source.

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25DCyber Network Defender

Documented history

Telecommunications Operator-Maintainer

DA Pam 611-21 Table 10-4 maps predecessor MOSC 74C3 to 25D; source successor entries: 25D TELECOMMUNICATIONS OPERATOR-MAINTAINER; conversion effective 01 Jan 2005.

Source documents (1)

DA Pam 611-21, chapter 10, Table 10-4, Enlisted MOS Conversion Listing
1. Table 10-4, PDF p. 281 · source dated 2025
PDF page 281 (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.