This United States Marine Corps USMC T&R Manual, NAVMC 3500.98C Marine Corps Embassy Security Group Training and Readiness Manual December 2022, contains the collective and individual training requirements to prepare units to accomplish their combat mission. It identifies the minimum standards that Marines must be able to perform in combat. This T&R Manual is a fundamental tool for commanders to build and maintain unit combat readiness. Using this tool, leaders can construct and execute an effective training plan that supports the unit's METL. This T&R Manual is designed for use by unit commanders to determine predeployment training requirements in preparation for training and for formal schools and training detachments to create programs of instruction. This manual focuses on individual and collective tasks performed by FMF units and supervised by personnel in the performance of unit mission essential task(s) (MET).