Task Force 31
Encyclopedia
Task Force 31 was a US Navy task force
Task force
A task force is a unit or formation established to work on a single defined task or activity. Originally introduced by the United States Navy, the term has now caught on for general usage and is a standard part of NATO terminology...

 active with the United States Third Fleet during World War II, and still ready to be activated today with today's Third Fleet. Task Force numbers were in constant use, and there were several incarnations of TF 31 during World War II.

In its most known World War II guise, it was formed at the end of World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, under Rear Admiral
Rear Admiral
Rear admiral is a naval commissioned officer rank above that of a commodore and captain, and below that of a vice admiral. It is generally regarded as the lowest of the "admiral" ranks, which are also sometimes referred to as "flag officers" or "flag ranks"...

 Oscar C. Badger II
Oscar C. Badger II
Oscar Charles Badger II was an admiral of the United States Navy who served in both World Wars, and, as a junior officer, received the Medal of Honor.-Early history:...

, to begin the occupation of Japan. The TF 31 combatant ships were the first to enter Tokyo Bay
Tokyo Bay
is a bay in the southern Kantō region of Japan. Its old name was .-Geography:Tokyo Bay is surrounded by the Bōsō Peninsula to the east and the Miura Peninsula to the west. In a narrow sense, Tokyo Bay is the area north of the straight line formed by the on the Miura Peninsula on one end and on...

 when the US was not certain what kind of reception was waiting from the Japanese. The Task Force transported US Marine units to the Miura Peninsula
Miura Peninsula
is a peninsula located in Kanagawa, Japan. It lies south of Yokohama and Tokyo and divides Tokyo Bay, to the east, from Sagami Bay, to the west. Cities and towns on the Miura Peninsula include Yokosuka, Miura, Hayama, Zushi, and Kamakura....

 area of Japan, which forms the southwest arm of Tokyo Bay
Tokyo Bay
is a bay in the southern Kantō region of Japan. Its old name was .-Geography:Tokyo Bay is surrounded by the Bōsō Peninsula to the east and the Miura Peninsula to the west. In a narrow sense, Tokyo Bay is the area north of the straight line formed by the on the Miura Peninsula on one end and on...

, for occupation duties. The Marines were tasked with securing the military bases at Yokosuka and demilitarizing the entire peninsula.

Background

Anticipating a possible Japanese surrender, plans were underway for the occupation of Japan. General MacArthur
Douglas MacArthur
General of the Army Douglas MacArthur was an American general and field marshal of the Philippine Army. He was a Chief of Staff of the United States Army during the 1930s and played a prominent role in the Pacific theater during World War II. He received the Medal of Honor for his service in the...

's Operation Blacklist was chosen over Admiral Nimitz' plan. Both commanders agreed that the prompt occupation of Japan was essential. Third Fleet, under Admiral Halsey
Admiral Halsey
Admiral Halsey may refer to:*U.S. Admiral William Halsey, Jr., b. 1882*British Admiral Lionel Halsey, b. 1872*The Paul McCartney song "Uncle Albert/Admiral Halsey"...

, was the only unit deemed capable and ready to do this. "On 8 August, advance copies of Halsey's Operation Plan 10–45 for the occupation of Japan setting up Task Force 31 (TF 31), the Yokosuka Occupation Force, were distributed. The task force's mission, based on Nimitz's basic concept, was to clear the entrance to Tokyo Bay and anchorages, occupy and secure the Yokosuka Naval Base, seize and operate Yokosuka Airfield, support the release of Allied prisoners, demilitarize all enemy ships and defenses, and assist U.S. Army troops in preparing for the landing of additional forces. Three days later, Rear Admiral Badger, Commander, Battleship Division 7, was designated by Halsey to be commander, TF 31." The existing Task Force 38 was also alerted.

The 6th Marine Division, was tasked to provide a regiment for the land portion of the operation. The Fleet Landing Force was commanded by Brigadier General
Brigadier General
Brigadier general is a senior rank in the armed forces. It is the lowest ranking general officer in some countries, usually sitting between the ranks of colonel and major general. When appointed to a field command, a brigadier general is typically in command of a brigade consisting of around 4,000...

 William T. Clement
William T. Clement
William Tardy Clement was a general of the United States Marine Corps during World War II.Clement was born in Lynchburg, Virginia, and graduated from Virginia Military Institute...

. The 4th Regiment
U.S. 4th Marine Regiment
The 4th Marine Regiment is an infantry regiment of the United States Marine Corps. Based at Camp Schwab in Okinawa, Japan, it is part of the 3rd Marine Division of the III Marine Expeditionary Force.-Mission:...

 was selected. The choice was symbolic as the Old 4th had been captured in the Philippines early in the war. The 4th, and additional support units, made up the 5,400 man Task Force Able.

Beginning

The elements of TF 31 began loading the Marines and their equipment on 1945-08-14. On the 18th, advance command elements of the task force on board the USS Ozark
USS Ozark (LSV-2)
The USS Ozark was a Catskill-class vehicle landing ship built for the United States Navy during World War II. Named for the native American Ozark tribe of the Quapaw confederacy, she was the third U.S...

 joined up with the USS Missouri
USS Missouri (BB-63)
|USS Missouri is a United States Navy Iowa-class battleship, and was the fourth ship of the U.S. Navy to be named in honor of the U.S. state of Missouri...

 in Task Force 38. The Task Force was officially created on at 1400 on 1945-08-19 en route to Japan. Two landing plans were considered: landing at Zushi on the western side of the peninsula or at Zushi and Yokosuka on the Tokyo Bay side. It was decided not to risk entering the bay until the "threat of Japanese treachery" was dealt with. At sea, some 3,500 men were transferred between the ships to organize the assault units.

On 1945-08-21 plans were changed to land at Yokosuka, the primary objective. This would reduce the forces' exposure on two narrow roads from Zushi to Yokosuka. General MacArthur's choice of Zushi as his headquarters also was a factor in the decision. L-Day was originally scheduled for 1945-08-26, but was delayed to the 28th by a typhoon developing 300 miles to the southeast that was going to delay USAAF operations for 48 hours. L-Day was again delayed until 1945-08-30.

Occupation

On 1945-08-27, Japanese reported on board the Missouri and their pilots were sent on a destroyer
Destroyer
In naval terminology, a destroyer is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against smaller, powerful, short-range attackers. Destroyers, originally called torpedo-boat destroyers in 1892, evolved from...

 to guide Task Force 31 into Yokosuka Bay. Minesweepers
Minesweeper (ship)
A minesweeper is a small naval warship designed to counter the threat posed by naval mines. Minesweepers generally detect then neutralize mines in advance of other naval operations.-History:...

 did a defensive sweep on the way in as the Japanese had not been able to sweep the approaches. That afternoon Task Force 31 anchored in Sagami Wan, just outside Tokyo Bay.

At 0900 on 1945-08-28, led by USS San Diego
USS San Diego (CL-53)
The second USS San Diego was an Atlanta-class light cruiser of the United States Navy, commissioned just after the US entry into World War II, and active throughout the Pacific theater...

, the combat elements of Task Force 31 entered Tokyo Bay and by 1300 they were anchored in Yokosuka Bay. Vice Admiral
Vice Admiral
Vice admiral is a senior naval rank of a three-star flag officer, which is equivalent to lieutenant general in the other uniformed services. A vice admiral is typically senior to a rear admiral and junior to an admiral...

 Michitaro Totsuka
Michitaro Totsuka
-Notes:...

 reported on board the San Diego for instructions on securing and surrendering the Yokosuka base. Around that time, an advance party from the USAAF landed at Atsugi Airfield
Naval Air Facility Atsugi
is a naval air base located in the cities of Yamato and Ayase in Kanagawa Prefecture, Japan. It is the largest United States Navy air base in the Pacific Ocean and houses the squadrons of Carrier Air Wing 5, which deploys with the aircraft carrier...

 to prepare it for the L-Day landing of the 11th Airborne
U.S. 11th Airborne Division
-Knollwood Maneuver:The 11th Airborne, as the attacking force, was assigned the objective of capturing Knollwood Army Auxiliary Airfield near Fort Bragg in North Carolina. The force defending the airfield and its environs was a combat team composed of elements of the 17th Airborne Division and a...

.

On 1945-08-29, Admiral Halsey arrived in Sagami Wan. Two POWs rescued earlier from the beach convinced him to start the POW rescue operations that day. "That evening, for the first time since Pearl Harbor
Attack on Pearl Harbor
The attack on Pearl Harbor was a surprise military strike conducted by the Imperial Japanese Navy against the United States naval base at Pearl Harbor, Hawaii, on the morning of December 7, 1941...

, the ships of the Third Fleet were illuminated. As General Metzger later remembered: 'Word was passed to illuminate ship, but owing to the long wartime habit of always darkening ship at night, no ship would take the initiative in turning their lights on. Finally, after the order had been repeated a couple of times lights went on. It was a wonderful picture with all the ships flying large battle flag
Battle ensign
A battle ensign is the name given to a large war flag which is flown on a warship's mast just before going into battle.The flag identified the allegiance of the ship in what could be a very confusing situation, with thick clouds of gunsmoke obscuring the ships in action, hence the large size of...

s both at the foretruck and the stern
Stern
The stern is the rear or aft-most part of a ship or boat, technically defined as the area built up over the sternpost, extending upwards from the counter rail to the taffrail. The stern lies opposite of the bow, the foremost part of a ship. Originally, the term only referred to the aft port section...

. In the background was snowcapped Mount Fuji
Mount Fuji
is the highest mountain in Japan at . An active stratovolcano that last erupted in 1707–08, Mount Fuji lies about south-west of Tokyo, and can be seen from there on a clear day. Mount Fuji's exceptionally symmetrical cone is a well-known symbol of Japan and it is frequently depicted in art and...

.' Movies were shown on the weather decks. While the apprehension of some lessened, lookouts were still posted, radar
Radar
Radar is an object-detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio...

s continued to search, and the ships remained on alert."

Before dawn on L-Day, 1945-08-30, three groups of transports and escorts from TF 31 left Sagami Wan for Tokyo Bay. At 0558, Marines landed on Fattsu Saki to secure the forts guarding Tokyo Bay, in coordination with the planned 0600 arrival of planes carrying the 11th Airborne at Atsugi Airfield. Finding the Japanese had followed the instructions on disabling their guns to the letter, the Marines quickly secured the forts and rejoined the task force at 0845. At 0805 a small crew from USS South Dakota
USS South Dakota (BB-57)
USS South Dakota was a battleship in the United States Navy from 1942 until 1947. The lead ship of her class, South Dakota was the third ship of the US Navy to be named in honor of the 40th state. During World War II, she first served in a fifteen-month tour in the Pacific theater, where she saw...

 boarded the Japaneses battleship Nagato
Japanese battleship Nagato
Nagato was a battleship of the Imperial Japanese Navy; the lead ship of her class. She was the first battleship in the world to mount 16 inch guns, her armour protection and speed made her one of the most powerful capital ships at the time of her commissioning.She was the flagship of Admiral...

 and received its surrender from a skeleton crew. 0930 on L-Day saw the Marines of 1st and 3rd Battalion landing at Yokosuka. The Japanese at the Yokosuka base had complied completely by disabling their weapons and removing all non-essential personnel. At 1030 the San Diego docked at Yokosuka. The formal surrender of the Japanese First Naval District by Admiral Totsuka to Rear Admiral Robert Carney
Robert Carney
Robert Bostwick Carney was an admiral in the United States Navy who served as commander-in-chief of the NATO forces in Southern Europe and then as Chief of Naval Operations during the Eisenhower administration.-Early years:Born in Vallejo, California, Carney graduated from the Naval Academy in...

, acting for Admiral Halsey, and Rear Admiral Badger took place at 1045.

Dissolution

After the delivery of the Marine occupation forces, TF 31 transport assets departed on 1 September to transport additional occupation troops. After the formal surrender of Japan on 1945-09-02, Task Force 31 had completed its mission. By 6 September all Navy personnel and ships' Marine detachments had returned to their ships from shore duties. On 1945-09-08, Admiral Badger's Task Force 31 was dissolved.

Ships of Task Force 31

(Task Force Flagship
Flagship
A flagship is a vessel used by the commanding officer of a group of naval ships, reflecting the custom of its commander, characteristically a flag officer, flying a distinguishing flag...

) ?
  • TG 31.5

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  • TG 31.2 – Minesweeping Group

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    • YMS: YMS-177(probably), YMS-268, YMS-276, YMS-343, YMS-362, YMS-390, YMS-415, YMS-426, YMS-441, YMS-461, YMS-467
    • PGM-32, PGM-??
  • Former TU 12.1.2
    • "Trio of Destroyers"

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External links

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