In the US Marine Corps, what does S4 represent?

In the context of the US Marine Corps, S4 refers specifically to the logistics section within a unit's staff system. The S4 is crucial for planning and managing the supply chain, including transportation, maintenance, and distribution of equipment and personnel support. This role ensures that marines have the necessary resources and support for operations, emphasizing the importance of logistics in military success. Understanding the function of S4 is essential for midshipmen as logistics plays a pivotal role in both planning and execution of military operations.