The battalion was activated on November 1, 1940, in San Diego and was assigned to the 2nd Marine Brigade. The 2nd Marine Brigade was re-designated February 1, 1941, as 2nd Marine Division. They participated in the action at the Battle of Guadalcanal, Battle of Tarawa, Battle of Saipan, Battle of Tinian and the Battle of Okinawa. Following the surrender of Japan, they re-deployed during September 1945 to Nagasaki, Japan and participated in occupation of Japan from until February 1946. The battalion was deactivated March 26, 1946.