The 1st Marine Division (1st MARDIV) is a distinguished division of the United States Marine Corps, headquartered at Marine Corps Base Camp Pendleton, California. As the ground combat element of the I Marine Expeditionary Force (I MEF), it stands as the oldest, largest, and most decorated division in the Corps.
With a combat-ready force of 22,000 personnel, the 1st Marine Division embodies a multi-role, expeditionary ground combat force. Nicknamed "The Old Breed", the division has played a pivotal role in every major conflict, showcasing valor, sacrifice, and unparalleled bravery.
