The 3rd Marine Division is a division of the United States Marine Corps based at Camp Courtney, Marine Corps Base Camp Smedley D. Butler in Okinawa, Japan. It is one of three active duty infantry divisions in the Marine Corps and together with the 1st Marine Aircraft Wing (1stMAW) and the 3rd Marine Logistics Group (3rd MLG) forms the III Marine Expeditionary Force (III MEF). The division was first formed during World War II and saw four years of continuous combat in the Vietnam War. Today, elements of the 3rd Marine Division are continuously forward deployed and forward postured to carry out the US Government's mission of a Free and Open Indo-Pacific in conjunction with its sister services. Subordinate units Headquarters Battalion 3rd Marine Littoral Regiment 4th Marine Regiment (Infantry) 12th Marine Regiment (Artillery) 3rd Reconnaissance Battalion Jungle Warfare Training Center, Okinawa (Transitioning to TECOM) History World War II The 3rd Marine Division was officially activated on September 16, 1942 at Camp Elliott, San Diego, California. Most of the original members of the division were drawn from the cadre staff of the 2nd Marine Division. The division was initially built around the 9th Marine Regiment, commanded by Colonel Lemuel C. Shepherd, Jr. who later became the 20th Commandant of the Marine Corps. Major General Charles D. Barrett was the first commanding general of the division. The division deployed into Auckland, New Zealand, between January and March 1943. In June of that year, it moved onto Guadalcanal for additional training. 1 November 1943 saw the division land as part of the Battle of Bougainville and fight on the island until their last unit to arrive, the 21st Marine Regiment, embarked on 9 January 1944. During the course of the battle the division had about 400 Marines killed. The division returned to Guadalcanal in January 1944 to rest, refit, and retrain. The next operation in which the division took part was the Battle of Guam. From 21 July 1944 until the last day of organized fighting on 10 August, the division fought through the jungles on the island of Guam. During these 21 days of fighting, the division captured over of territory and killed over 5,000 enemy soldiers. The next two months saw continuous mopping up operations in which the Marines continued to engage leftover Japanese forces. At the end of the battle the division had sustained 677 Marines killed, 3,626 wounded,