The 2nd Marine Brigade was re-designated February 1, 1941, as 2nd Marine Division. It participated in the action at the Battle of Guadalcanal, Battle of Tarawa, Battle of Saipan, Battle of Tinian and the Battle of Okinawa.
The 2nd Marine Brigade underwent a name change on February 1, 1941, becoming the 2nd Marine Division. This division was instrumental in several major campaigns, including those at Guadalcanal, Tarawa, Saipan, Tinian, and Okinawa.