Expeditionary Advanced Base Operations

BACKGROUND

The United States Marine Corps's Advanced Base Force was a coastal and naval base defense force that was designed to set up mobile and fixed bases in the event of major landing operations within, and beyond, the territorial United States. Established in the beginning of the 20th century, the Advanced Base Force was the United States' first combined task force built on the concept of the Marine Corps' traditional role in expeditionary warfare. The slow development of the advanced base force played a significant role in the controversy over the removal of the ships' guards in 1908–1909.