What is the primary function of S1?

The primary function of S1 within a naval or military command structure focuses on administration. The S1 section is responsible for managing personnel records, handling assignments, promotions, evaluations, and overall personnel administration. This includes ensuring that all administrative tasks related to personnel are efficiently carried out, such as onboarding new personnel and maintaining morale through effective communication.

In addition to ensuring compliance with policies and procedures, S1 plays a key role in advising leadership on personnel matters, thereby directly impacting the effectiveness and readiness of the unit. By centralizing these administrative duties, the S1 staff allows other branches, like operations or supply, to concentrate on their core functions without distraction from administrative issues.