S-6 is responsible for which area?

• A. Logistics
• B. Personnel
• C. Signal/communications
• D. Intelligence

Answer: (C)

S-6 covers signal and communications, the networks that allow command and control to function. This includes planning, installing, maintaining, and securing radio nets, data links, telephone and satellite communications, and the information systems that tie these together. They manage security of communications—encryption, crypto key management, and cyber protections—and ensure there’s enough bandwidth and redundancy so leaders can issue orders and receive updates reliably. In practice, S-6 coordinates call signs, frequencies, and access to digital systems, and quickly reestablishes or reroutes networks if a link goes down, keeping the unit connected during operations. This area stands apart from logistics (S-4), personnel (S-1), and intelligence (S-2), which handle supplies, manpower, and information gathering, respectively.