Five-year force expansion will add Marines to 19 infantry battalions, autonomous systems units, counter-UAS defenses, and new specialties as the Corps prepares for a more dispersed, technology-driven fight
PARRIS ISLAND, SC | The Marine Corps is preparing to add more than 6,500 billets over the next five years, expanding infantry formations, drone and counter-drone capabilities, precision fires and specialized technical career fields as the service reshapes itself for future conflicts.
The expansion represents a significant manpower component of the Corps’ continuing modernization effort, pairing additional personnel with investments in autonomous systems, artificial intelligence, robotics, sensors and long-range fires.
Under the plan, the new billets will be distributed across 64 initiatives, including reinforcing forces oriented toward the Pacific, establishing additional unmanned aircraft training capacity and creating new military occupational specialties.
The Corps is targeting roughly a 4% increase in end strength by 2031, followed by an additional 1% increase by 2032.
The changes suggest Marine leaders see manpower — particularly Marines with specialized technical and combat skills — as essential to translating years of modernization investments into battlefield capability.

