Army · MOS history
Converted to 21J, dated October 1, 2006 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: 21E1 Construction Equipment Operator, itself later retired
Crane Operator
DA Pam 611-21 Table 10-4 maps predecessor MOSC 21F1 to 21J; source successor entries: 21J GENERAL CONSTRUCTION EQUIPMENT OPERATOR; conversion effective 01 Oct 2006.
1. Table 10-4, PDF p. 239 · source dated 2025
PDF page 239 (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.