The V Amphibious Corps (VAC) was a formation of the United States Marine Corps which was composed of the 3rd, 4th and 5th Marine Divisions in World War II. The three divisions were the amphibious landing force for the United States Fifth Fleet with two goals, removal of Japanese forces from islands so U.S. Seabees could build advance bases to project US power. In doing this VAC was notably involved in the battles for Tarawa, Saipan, and Iwo Jima. V Amphibious Corps was commanded by General Holland 'Howlin Mad' Smith followed by General Harry Schmidt. History The V Amphibious Corps (formerly Amphibious Corps, Pacific Fleet; ACPF) was formed on 25 August 1943 at Camp Elliot, California. In September 1943, it moved to Pearl Harbor, Hawaii. Structure The structure of a United States Marine Corps' amphibious corps by 1945, was broken down into four major subordinate commands with each of them having numerous sub-elements: The first major element of the Corps was three reinforced Marine infantry divisions. The second was the Corps artillery, which was composed of a field artillery group made of three battalions of 155mm howitzers, three battalions of 155mm guns, and an Antiaircraft Artillery Group made of three antiaircraft artillery battalions. The third was the Amphibian Tractor Group, which was made up of four amphibian tractor battalions and an armored amphibian tractor battalion. The fourth was the Corps Troops, which was composed of a headquarters and service battalion, administrative command, signal battalion, medical battalion, motor transport battalion, engineer battalion, reconnaissance battalion, and military police battalion. Subordinate units The US Marine Corps, US Army, and Naval Construction Force commands that served under the V Amphibious Corps in World War II include: Marine Corps 2nd Marine Division 3rd Marine Division 4th Marine Division 5th Marine Division 22nd Marine Regiment Amphibious Reconnaissance Battalion [formerly "Company"] Army XXIV Corps Artillery 7th Infantry Division 27th Infantry Division 32nd Infantry Division Navy 6th Naval Construction Brigade (Tinian and Saipan) 9th Naval Construction Brigade (Iwo Jima) Command and Staff Corps Commanders General Holland M. Smith: 25 August 1943 – 11 July 1944 General Harry Schmidt: 12 July 1944 – 15 February 1946 (Deactivation) Chiefs of Staff Brigadier General Graves B. Erskine: August 1943 - August 1944 Brigadier General William W. Rogers: August 1944 - December 1945 Brigadier General Dudley S. Brown: December 1945 - February 1946 Corps Artillery Brigadier general Thomas E. Bourke Colonel John