What is the importance of maintaining strength in each grade and MOS within the Promotion System?

Maintaining strength in each grade and Military Occupational Specialty (MOS) within the Promotion System is crucial for creating a balanced and effective force. When personnel levels are balanced across different ranks and specialties, the Marine Corps can ensure that every unit has the right mix of experience, skill sets, and leadership capabilities. This balance is critical for operational readiness, as it ensures that all units have adequately qualified personnel to fulfill their missions.

A well-structured promotion system contributes to the overall effectiveness of the Marine Corps by promoting individuals based on merit while also considering the needs of the service. When the right number of promotions happens within various grades and MOSs, it helps maintain the integrity and operational effectiveness of the force. This careful management avoids over-promoting individuals in specific areas while under-resourcing others, which could lead to skill gaps or leadership deficits in crucial operational roles.