At what organizational level is sustainment maintenance performed?

The correct answer reflects the understanding that sustainment maintenance is primarily conducted at the division level within military logistics. This level of maintenance involves more complex repairs and the management of resources that support multiple units within the division, ensuring that all subordinate units have the necessary equipment and capabilities to perform their missions effectively.

Sustainment maintenance includes overhauls, upgrades, and replacements that are not feasible at lower organizational levels due to the scale and specialization of resources required. This is essential for maintaining combat readiness and ensuring that units are adequately supplied and supported. While battalion and company levels perform certain direct maintenance tasks, they are often focused on immediate, tactical repairs and less extensive project work compared to the division level. Similarly, the platoon level handles the most basic maintenance tasks and operational readiness checks, which do not encompass the broader scope of sustainment maintenance necessary at the division level.