Cyber & Signal

Career Management Fields 17 and 25 cover the soldiers who own the Army’s digital battlespace. CMF 17 (Cyber) conducts offensive and defensive operations in cyberspace: hunting adversary networks, protecting Army systems, and executing authorized cyber missions. CMF 25 (Signal Corps) builds and operates the communications infrastructure that connects every commander to every unit in their formation. Without Signal, there is no command and control. Without Cyber, that command and control is vulnerable.

Nine MOS jobs span these two fields, ranging from entry-level IT support to some of the most technically selective positions in the entire Army. At one end, the 25U Signal Support Specialist keeps a battalion’s radios working in the field. At the other end, the 17C Cyber Operations Specialist runs missions against adversary networks inside a Sensitive Compartmented Information Facility. Between those extremes you’ll find satellite operators, network defenders, spectrum managers, and nodal network engineers, each filling a distinct gap in the Army’s ability to communicate and compete in cyberspace.

What connects all nine jobs is a shared reliance on technical aptitude. Every MOS in this family requires above-average ASVAB line scores. All nine require a security clearance, ranging from Secret to Top Secret/SCI. The Army is investing heavily in both fields: cyber units are growing, and Signal modernization is ongoing. For candidates who score well on the ASVAB and can pass a background investigation, this career field offers some of the strongest civilian career paths in the entire military.

At a Glance

Notes: 25D and 25E are reclassification MOSs open only to serving NCOs. 25N is a legacy identifier; new accessions train under the consolidated 25H MOS. Training lengths are approximate and subject to change.

Which Role Fits You?

The nine jobs in this family group naturally into four clusters. Knowing which one matches how you want to spend your day is more useful than memorizing ASVAB composites.

Cyber Operations and Offense

If you want to operate against actual adversaries, hunting intrusions, running authorized offensive missions, and working inside classified facilities, the cyber MOSs are what you’re after. The 17C Cyber Operations Specialist is the Army’s offensive cyber operator, attending a 45-plus-week pipeline that includes the Joint Cyber Analysis Course in Pensacola alongside Navy and Air Force students. The 17E Electronic Warfare Specialist works the electromagnetic spectrum, jamming enemy communications and protecting friendly systems at the brigade and division level. Both require Top Secret/SCI clearances and three of the hardest ASVAB line score thresholds in the enlisted Army.

These are the best choices if you want mission work that civilian employers will pay six figures for the day you leave. The trade-off: long training pipelines, strict security restrictions, and shift work inside windowless SCIFs.

Network Defense and Cybersecurity

Two MOSs focus specifically on protecting Army networks rather than operating offensively. The 25D Cyber Network Defender monitors networks for intrusions, conducts incident response, and performs vulnerability assessments. It’s a reclassification MOS available only to experienced NCOs at E-6 or above with at least four years of IT background, making it the natural next step for a 25B soldier who wants to specialize in defense. The 25B Information Technology Specialist is the entry-level path into this cluster, managing Army IT systems, servers, and networks with a more accessible ST 95 line score requirement and a Secret clearance.

Choose 25B if you’re starting out and want a civilian IT career as the end goal. Plan for 25D after you’ve built a few years of hands-on experience and a strong evaluation record.

Satellite and Radio Communications

Soldiers who want to work with large physical systems: antenna farms, satellite dishes, and tactical radio networks, fit here. The 25S Satellite Communication Systems Operator-Maintainer aligns wideband terminals and maintains the satellite ground links that connect forward bases to higher headquarters. The 25U Signal Support Systems Specialist keeps tactical radios and digital systems running at the battalion and brigade level, operating the unit-level communications gear that commanders depend on daily. The 25H Network Communication Systems Specialist bridges both worlds, covering fiber, nodal nodes, satellite terminals, and multichannel radio in a single consolidated MOS. The 25N Nodal Network Systems Operator-Maintainer fills the same nodal infrastructure function as a legacy identifier, with new accessions now training under 25H.

These jobs put you outside more than the cyber roles, handling physical equipment in the field and during deployments. The civilian crossover is into telecommunications, satellite operations, and network engineering.

Spectrum Management

The 25E Electromagnetic Spectrum Manager occupies a separate technical lane. You assign radio frequencies across an entire area of operations, deconflict interference between friendly systems, and advise commanders on electromagnetic threat environments. It’s a reclassification-only specialty with no entry-level path, filled by experienced Signal NCOs from qualifying 25-series MOSs. The work is more analytical and advisory than hands-on equipment operation. If you’re already in Signal, have strong GT and EL scores, and prefer technical depth over troop leadership, 25E is worth pursuing.

The comparison table above has the side-by-side details for all nine roles.

Common Entry Requirements

All nine jobs require a U.S. citizenship and a high school diploma or GED. Every MOS in this family requires at least a Secret security clearance, with 17C, 17E, and 25D requiring Top Secret or higher. Most Signal MOSs are open to direct enlistment, while 25D and 25E are available only through reclassification for serving NCOs. The majority of training takes place at the U.S. Army Cyber Center of Excellence at Fort Eisenhower, Georgia, which houses both the Cyber School and the Signal School. Color vision is specifically required for 17E, 25E, 25H, and 25S. See each role’s profile below for specific ASVAB scores, training details, and additional requirements.

Career Field Directory

Cyber Operations (CMF 17)

• 17C Cyber Operations Specialist: offensive and defensive cyber missions, digital forensics, and malware analysis inside classified facilities
• 17E Electronic Warfare Specialist: electromagnetic attack, protection, and support operations across the spectrum at brigade through corps

Signal Corps (CMF 25)

• 25B Information Technology Specialist: Army IT systems, servers, and networks; the broadest-access entry point into the cyber-signal career field
• 25D Cyber Network Defender: network intrusion detection, incident response, and vulnerability assessment; reclassification for experienced NCOs only
• 25E Electromagnetic Spectrum Manager: frequency assignment, spectrum deconfliction, and electromagnetic warfare advisory; a low-density reclassification specialty
• 25H Network Communication Systems Specialist: fiber, nodal nodes, multichannel radio, satellite terminals, and COMSEC in a single consolidated MOS
• 25N Nodal Network Systems Operator-Maintainer: tactical network backbone; the legacy nodal identifier consolidated into 25H for new accessions
• 25S Satellite Communication Systems Operator-Maintainer: wideband satellite terminals and ground station operations supporting theater-level communications
• 25U Signal Support Systems Specialist: unit-level tactical radios and data distribution systems at battalion and brigade

Related Resources

All nine jobs in this family require competitive ASVAB scores, so preparing early matters. The ASVAB study guide covers every composite that appears in the table above (GT, ST, EL, and SC) with strategies for each. First-time testers may qualify for the PiCAT, an at-home version of the ASVAB that can count as an official score. Explore all Army enlisted career paths to compare this family against other technical fields.

Explore more Army technical career fields in the enlisted career directory, including Intelligence and Maintenance.