Final answer:
A Unit Type Code Report must be generated before reporting Logistics details to the major command.
Step-by-step explanation:
Before reporting Logistics details (LOGDET) to the major command (MAJCOM), a Unit Type Code Report (UTC) must be generated. This report provides a comprehensive list of the equipment and supplies a unit requires to function, as well as the personnel needed and the capabilities of the unit. The UTC Report is a critical step in ensuring proper alignment of resources and operational readiness before the high-level logistics information is shared with the MAJCOM.