In sustainment, what are the primary categories of capability provided to a combat unit?

• A. Logistics and supply, maintenance, transportation, medical support, and field services that enable ongoing operations.
• B. Intelligence, surveillance, reconnaissance, and targeting.
• C. Engineering, construction, and demining.
• D. Public affairs, legal, and finance.

Answer: (A)

Sustainment is about keeping a combat unit fed, equipped, healthy, and able to move so it can stay in the fight over time. The primary categories of capability provided to a combat unit are logistics and supply, maintenance, transportation, medical support, and field services that enable ongoing operations. Logistics and supply cover the end-to-end flow of materiel—from planning and procurement to storage, distribution, and inventory management—so units have the right items in the right quantities at the right time. Maintenance keeps weapons and equipment ready, reducing downtime and extending their life. Transportation moves people, gear, and supplies across the battlespace, preserving tempo and reach. Medical support delivers health services, casualty care, and evacuation to sustain fighting strength. Field services handle essential day-to-day needs in the field—mess, laundry, mortuary, and other services that maintain morale and operating capability.

Other areas, like intelligence, surveillance, reconnaissance, and targeting, belong to information and decision-making activities; engineering and demining focus on construction and mobility tasks; and public affairs, legal, and finance handle messaging, law, and financial matters. These are important, but they align with different functional roles rather than the core sustainment capabilities that keep a combat unit supplied and ready to operate.