Which of the following is a major element of sustainment?

• A. Logistics
• B. Mobility
• C. Readiness
• D. Training

Answer: (A)

Sustainment hinges on keeping operations ongoing by delivering the resources and support the force needs when and where it needs them. That function is logistics—planning, coordinating, and executing the flow of supplies, maintenance, transportation, and services to sustain forces in the field. Logistics ensures forces are fed, fueled, equipped, repaired, and capable of moving through time and space, which is why it sits at the heart of sustainment. Mobility is about moving personnel and materiel, and while essential to operations, it’s a component that logistics enables rather than the overarching sustainment function. Readiness describes how prepared a unit is to perform, and training builds that capability; both are crucial, but sustainment is defined by the ability to provide and sustain resources, which is the logistics function.