Combat service support is an essential element of military operations that ensure the troops are equipped with everything they need to carry out their missions successfully. There are various synonyms for combat service support, including logistics, sustainment, maintenance, and supply chain management. Logistics involves the planning, transportation, and management of resources to support military operations. Sustainment refers to the assistance provided to ensure the continued effective and efficient performance of frontline troops. Maintenance involves repairing, servicing, and upgrading equipment deployed in combat zones. Finally, supply chain management is the management of the flow of goods and services, including inventory, procurement, and distribution, to support operational activity. Overall, combat service support is critical to military operations, and these synonyms reflect the various aspects required to provide the necessary assistance.