A Marine is promoted to the rank of sergeant on Camp Santiago, Puerto Rico, on Dec. 16, 2025. The Marine Corps released new policy Friday that will reduce the required time in service for promotion to sergeant from 48 months to 30 months beginning Oct. 1. (Maurion Moore/U.S. Marine Corps)
The Marine Corps is executing an about-face on a years-old policy that slowed promotion to sergeant, reducing the time Marines must serve before becoming eligible to advance.
Beginning Oct. 1, Marines will become eligible for promotion to sergeant after 30 months of service instead of four years, according to a message to the force issued Friday.
According to the update, lowering the requirement “strengthens competition and ensures Marines are promoted based on merit and performance.”
The change reverses a 2020 policy that doubled the time frame for promotion to sergeant from two years to four as part of broader personnel changes aimed at retaining experienced Marines.
The previous policy also increased the time-in-service requirement for promotion to staff sergeant from four years to five, a requirement left unchanged in Friday’s message.
The announcement also introduces changes to the promotion process for staff sergeants, shortening the timeline to complete required professional military education and restructuring the way promotion selections are managed.
After the release of the staff sergeant promotion selection list, sergeants will have 270 days to complete both the resident and distance education requirements of Sergeants School, a prerequisite for promotion. Previously, Marines had one year after selection to complete the requirement.
The policy also eliminates alternate selection lists for staff sergeant promotions. Under the previous system, additional Marines were selected as alternates to fill vacancies if primary selectees couldn’t meet promotion requirements.
Instead, the Marine Corps will use a predictive allocation model that selects additional Marines upfront based on projected attrition to help ensure that staffing requirements are met.
The shift from alternate selection lists to the predictive allocation model streamlines the promotion process and makes it easier for the Corps to have as many staff sergeants as it needs.
The promotion change applies across the total force, while the promotion selection and prerequisite adjustments apply to active-duty Marines and reservists working full time in a unit.
