17Z Cyberspace and Electromagnetic Activities (CEMA) Senior Sergeant (CEMA Sr SGT)

The Army MOS 17Z is a Cyberspace and Electromagnetic Activities (CEMA) Senior Sergeant. The CEMA Senior Sergeant provides technical and tactical advice to command and staff on all aspects of offensive and defensive cyberspace and electronic warfare operations.

The first four digits of the MOS number indicate the soldier’s job. The first two digits are the field code, the third digit is the sub-specialty, and the fourth digit is the job title.

Other MOSs include: 17L Army Aerial Sensor Specialist (OV-1B/C) 17A Army Combat Surveillance and Target Acquisition Crewman 17B Army Field Artillery Radar Crewmember 17C Army Field Artillery Target Acquisition Specialist 17E Army Field Illumination Crewman 17D Army Flash Ranging Crewman

The largest career field in the Army is MOS 11, which includes regular and indirect-fire infantry. The second largest career field is MOS 68, or combat medics.