The Army divides their MOSs into "Fields," of jobs that have similar missions. Below are the MOSs that belong to the Engineering (Construction) Field:
Note: In the year 2011, the Army plans to covert the entire 21 Field into a new 12-field. In other words, MOS 21B will become MOS 12B, MOS 21C will become MOS 12C, etc.
21B - Combat Engineer
21C - Bridge Crewmember
21D - Diver
21E - Heavy Construction Equipment Operator
21G - Quarrying Specialist
21H - Constructlon Engineering Supervisor
21J - General Construction Equulpment Operator
21K - Plumber
21L - Lithographer
21M - Firefighter
21N - Construction Equipment Supervisor
21P - Prime Power Production Specialist
21Q - Transmission and Distribution Specialist
21R - lnterior Electrician
21S - Topographic Surveyor
21T - Technical Engineering Specialist
21U - Topographic Analyst
21V - Construction and Asphalt Equipment Operator
21W - Carpentry and Masonry Specialist
21Y - Geospatial
Engineer
21X - General Engineering Supervisor
21Z - Combat Engineering Senior Sergeant
