Battle of Iwo Jima order of battle

Last updated
Iwo Jima - Landing Plan.jpg
Map of Iwo Jima showing landing beaches
H-hour at Iwo Jima, NH65311;fig15.jpg
Landing craft approaching Iwo Jima; looking southwest toward Mt. Suribachi

On February 19, 1945, men of the United States Marine Corps invaded the island of Iwo Jima, part of the Volcano Islands chain, in the North Pacific. This invasion, known as Operation Detachment , was a phase of the Pacific Theatre of World War II. The American goal was to establish multiple airfields that would allow escort fighters to accompany long-range bombers in their attacks on the Japanese home islands, as well as providing a place for damaged bombers to land on the return flight.

Contents

The Japanese military was determined to inflict a casualty rate so high that the U.S. government would give up its demand that Japan surrender unconditionally. To this end, the island had been covered with an extremely extensive system of fortifications and fields of fire. The United States Navy subjected the island to an unprecedented bombardment and, according to historian Samuel Eliot Morison, "In no previous operation in the Pacific had naval gunfire support been so effective as at Iwo Jima." [1] Nonetheless, Japanese artillery and machine-gun fire were extremely effective because the underground bunkers were so strong, only a direct hit by a bomb or naval shell could knock one out. Since direct hits were very difficult on well-camouflaged bunkers, many survived and inflicted a huge casualty rate on the Marines.

For the conquest of Iwo Jima, the Marine Corps assigned three divisions, a total of almost 70,000 troops, in stark contrast to the single division tasked with capturing Guadalcanal in August 1942. The conquest of Iwo Jima took five weeks, far beyond the American estimates.

United States

Naval commanders for Operation Detachment
Ray Spruance (cropped).jpg
Admiral Raymond A. Spruance
Richmond K. Turner.jpg
Vice Adm. Richmond Kelly Turner
Vice Adm. William H. P. Blandy (cropped).jpg
Rear Adm. William H.P. Blandy
Harry W. Hill.jpg
Rear Adm. Harry W. Hill

United States Pacific Fleet
Admiral Chester W. Nimitz HQ at Pearl Harbor

United States Fifth Fleet
Admiral Raymond A. Spruance in heavy cruiser Indianapolis
Joint Expeditionary Force (Task Force 51)
Vice Admiral Richmond Kelly Turner in amphibious command ship Eldorado
Amphibious Support Force (Task Force 52)
Rear Admiral William H.P. Blandy in amphibious command ship Estes
Attack Force (Task Force 53)
Rear Admiral Harry W. Hill in amphibious command ship Auburn

Ground forces

Ground force commanders
Holland Smith.jpg
Holland M. Smith as a full general
Harry Schmidt;USMC-C-Marshalls-p3.jpg
Maj. Gen. Harry Schmidt
LST-944 on Yellow Beach, Iwo Jima with fleet tug Zuni alongside USS Zuni (ATF-95) stranded on Yellow Beach, Iwo Jima with USS LST-944.jpg
LST-944 on Yellow Beach, Iwo Jima with fleet tug Zuni alongside

Expeditionary Troops (Task Force 56)
Lieutenant General Holland M. "Howlin' Mad" Smith [lower-alpha 1]

Chief of Staff: Col. Dudley S. Brown
Personnel officer (G-1): Col. Russell N. Jordahl
Intelligence officer (G-2): Col. Edmond J. Buckley
Operations officer (G-3): Col. Kenneth H. Weir
Logistics officer (G-4): Col. George R. Rowan

USMC V Amphib Corps.png V Amphibious Corps
Major General Harry Schmidt

Chief of Staff: Brig. Gen. William W. Rogers
Personnel officer (G-1): Col. David A. Stafford
Intelligence officer (G-2): Col. Thomas R. Yancey
Operations officer (G-3): Col. Edward A. Craig
Logistics officer (G-4): Col. William F. Brown
8th Marine Field Depot (shore party command): Col. Leland S. Swindler
Landing Force Air Support Control Unit 1: Col. Vernon E. Megee
62nd Seabees
5th Marine Division command
Rockey, Keller E..jpg
Maj. Gen. Keller E. Rockey
Leo D. Hermle.jpg
Leo D. Hermle as a major general
5th Marine Division command post on Iwo Jima; at left is Asst. Div. Cmdr. Leo D. Hermle with Div. Cmdr. Keller E. Rockey holding a field telephone Fifth Marine Division Command Post, Iwo Jima, 1945.jpg
5th Marine Division command post on Iwo Jima; at left is Asst. Div. Cmdr. Leo D. Hermle with Div. Cmdr. Keller E. Rockey holding a field telephone
A Marine Corps howitzer at the moment of firing Shelling on Iwo Jima.jpg
A Marine Corps howitzer at the moment of firing
Jeeps firing 4.5-inch rockets at Japanese positions Rocket-launchers-iwo-jima.jpg
Jeeps firing 4.5-inch rockets at Japanese positions

Left landing area (Green and Red Beaches):

US 5th Marine Division SSI.svg 5th Marine Division (25,884 officers and enlisted)
Major General Keller E. Rockey
Asst. Div. Cmdr.: Brig. Gen. Leo D. Hermle
Chief of Staff: Col. Ray A. Robinson
CO HQ Battalion: Maj. John Ayrault, Jr.
Personnel officer (G-1): Col. John W. Beckett
Intelligence officer (G-2): Lt. Col. George A. Roll
Operations officer (G-3): Col. James F. Shaw, Jr.
Logistics officer (G-4): Col. Earl S. Piper
Plans officer (G-5): Lt. Col. Frederick H. Dowsett
Green Beach:
28th Marines.JPG 28th Marine Regiment
Colonel Harry B. "Harry the Horse" Liversedge
Exec. Ofc.: Lt. Col. Robert H. Williams
1st Battalion (Lt. Col. Jackson B. Butterfield)
2nd Battalion (Lt. Col. Chandler W. Johnson (KIA 2 Mar), Maj. Thomas B. Pearce, Jr.)
3rd Battalion (Lt. Col. Charles E. Shepard, Jr. (to 14 Mar), Maj. Tolson A. Smoak (to 25 Mar), Lt. Col. Shepard)
Red Beaches 1 & 2:
27th Marines.JPG 27th Marine Regiment
Colonel Thomas A. Wornham
Exec. Ofc.: Col. Louis C. Plain (WIA 19 Feb), Lt. Col. James P. Berkeley)
1st Battalion (Lt. Col. John A. Butler (KIA 5 Mar), Lt. Col. Justin C. Duryea (WIA 9 Mar), Lt. Col. William H. Tumbleston (WIA 14 Mar)
2nd Battalion (Maj. John W. Antonelli (WIA 9 Mar), Maj. Gerald F. Russell)
3rd Battalion (Lt. Col. Donn J. Robertson) [lower-alpha 2]
Reserve:
26th Marines insignia.png 26th Marine Regiment
Colonel Chester B. Graham
Exec. Ofc.: Col. Lester S. Hamel
1st Battalion (Lt. Col. Daniel C. Pollock (WIA 19 Mar), Maj. Albert V.K. Gary)
2nd Battalion (Lt. Col. Joseph P. Sayers (WIA 23 Feb), Maj. Amadeo Rea)
3rd Battalion (Lt. Col. Tom M. Trotti (KIA 22 Feb), Maj. Richard Fagan)
13th Marines.jpg 13th Marine Regiment (Artillery)
Colonel James D. Waller
1st Battalion (Lt. Col. John S. Oldfield)
2nd Battalion (Maj. Carl W. Hjerpe)
3rd Battalion (Lt. Col. Henry T. Waller)
4th Battalion (Maj. James F. Coady)
Service troops
Colonel Benjamin W. Gaily
3rd Amphibian Tractor Battalion (Lt. Col. Sylvester L. Stephan)
11th Amphibian Tractor Battalion (Lt. Col. Albert J. Roose)
5th Engineer Battalion (Lt. Col. Clifford H. Shuey)
5th Medical Battalion (Lt. Cmdr. William W. Ayres, USN)
5th Motor Transport Battalion (Maj. Arthur F. Torgler, Jr.)
5th Pioneer Battalion (Maj. Robert S. Riddell)
5th Service Battalion (Maj. Francis P. Daly (KIA 22 Feb), Maj. Gardelle Lewis (from 26 Feb))
5th Tank Battalion (Lt. Col. William R. Collins)
4th Marine Division command
Clifton B. Cates.jpg
Clifton B. Cates as a full general
Hart FA.jpg
Franklin A. Hart as a lieutenant general
Men of the 4th Marine Division pinned down on the beach at Iwo Jima; LSM-46 is visible in the background 4th Division Marines at Iwo Jima.jpg
Men of the 4th Marine Division pinned down on the beach at Iwo Jima; LSM-46 is visible in the background
Japanese gun emplacement lightly damaged by bombardment; Marines still had to enter the enclosure and kill the troops inside. Aftermath of Bombardment of Japanese Emplacement, Iwo Jima, 1945 - 35885652134.jpg
Japanese gun emplacement lightly damaged by bombardment; Marines still had to enter the enclosure and kill the troops inside.
Black Marines with DUKW at Iwo Jima "Seeking to rescue a Marine who was drowning in the surf at Iwo Jima, this sextet of Negro soldiers narrowly missed deat - NARA - 532547.jpg
Black Marines with DUKW at Iwo Jima

Right landing area (Yellow and Blue beaches):

USMC - 4th Division.png 4th Marine Division (24,452 officers and enlisted)
Major General Clifton B. Cates [lower-alpha 3]
Asst. Div. Cmdr.: Brig. Gen. Franklin A. Hart
Chief of Staff: Col. Merton J. Batchelder
CO HQ Battalion: Col. Bertrand T. Fay
Personnel officer (G-1): Col. Orin H. Wheeler
Intelligence officer (G-2): Lt. Col. Gooderham L. McCormick
Operations officer (G-3): Col. Edwin A. Pollock
Logistics officer (G-4): Col. Matthew C. Horner
Yellow Beaches 1 & 2:
USMC - 23rd Marine Regiment.png 23rd Marine Regiment
Colonel Walter W. Wensinger
Exec. Ofc.: Lt. Col. Edward J. Dillon
1st Battalion (Lt. Col. Ralph Haas (KIA 20 Feb), Lt. Col. Louis B. Blissard)
2nd Battalion (Maj. Robert H. Davidson)
3rd Battalion (Maj. James S. Scales)
Blue Beach 1:
USMC - 4th Division 25th Regiment.png 25th Marine Regiment
Colonel John R. Lanigan
Exec. Ofc.: Lt. Col. Clarence J. O'Donnell
1st Battalion (Lt. Col. Hollis U. Mustain (KIA 21 Feb), Maj. Fenton J. Mee)
2nd Battalion (Lt. Col. Lewis C. Hudson, Jr. (WIA 20 Feb), Lt. Col. James Taul)
3rd Battalion (Lt. Col. Justice M. Chambers (WIA 22 Feb), Capt. James C. Headley)
Reserve:
24thMarinesCrest.png 24th Marine Regiment
Colonel Walter I. Jordan
Exec. Ofc.: Lt. Col. Austin R. Brunelli
1st Battalion (Maj. Paul S. Treitel (to 8 Mar), Lt. Col. Austin R. Brunelli)
2nd Battalion (Lt. Col. Richard Rothwell)
14th Marines logo.png 14th Marine Regiment (Artillery)
Colonel Louis O. DeHaven
Exec. Ofc.: Lt. Col. Randall M. Victory
1st Battalion (Maj. John B. Edgar, Jr.)
2nd Battalion (Maj. Clifford B. Drake)
3rd Battalion (Lt. Col. Robert E. MacFarlane (), )
4th Battalion (Lt. Col. Carl A. Youngdale ())
Service troops
Lt. Colonel Melvin L. Krulewitch
5th Amphibian Tractor Battalion (Maj. George L. Shead)
10th Amphibian Tractor Battalion (Maj. Victor J. Croizat)
4th Engineer Battalion (Lt. Col. Nelson K. Brown)
4th Medical Battalion (Cmdr. Reuben L. Sharp, USN)
4th Motor Transport Battalion (Lt. Col. Ralph L. Schiesswohl)
4th Pioneer Battalion (Lt. Col. Richard G. Ruby)
4th Service Battalion (Lt. Col. John F. Fondahl)
4th Tank Battalion (Lt. Col. Richard K. Schmidt)
3rd Marine Division command
Graves B Erskine USMC.jpg
Maj. Gen. Graves B. Erskine
William A. Worton.JPG
William A. Worton as a colonel
3rd Marine Division officers on Iwo Jima: (l. to r.) Col. Robert W. Hogaboom, Maj. Gen. Graves B. Erskine, Col. John B. Wilson Hogaboom, Erskine and Wilson, Iwo Jima.jpg
3rd Marine Division officers on Iwo Jima: (l. to r.) Col. Robert W. Hogaboom, Maj. Gen. Graves B. Erskine, Col. John B. Wilson
Marines firing a 155mm howitzer Marine Artillerymen Firing Howitzers on Beach, Iwo Jima, 1945.jpg
Marines firing a 155mm howitzer
Fierce combat continued as Airfield No. 1 was scraped and graded. Iwo Jima Airfield Number 1.jpg
Fierce combat continued as Airfield No. 1 was scraped and graded.

Floating reserve:

US 3d Marine Division SSI.svg 3rd Marine Division (19,597 officers and enlisted)
Major General Graves B. Erskine
Asst. Div. Cmdr.: Brig. Gen. William A. Worton
Chief of Staff: Col. Robert E. Hogaboom
CO HQ Battalion: Lt. Col. Jack F. Warner (to 14 Mar), Lt. Col. Carey A. Randall
Personnel officer (G-1): Maj. Irving R. Kriendler
Intelligence officer (G-2): Lt. Col. Howard J. Turton
Operations officer (G-3): Col. Arthur H. Butler
Logistics officer (G-4): Col. James D. Hittle
Committed to center sector D+2, attached to 4th Marine Division:
Emblem of the United States Marine Corps.svg 21st Marine Regiment
Colonel Hartnoll J. Withers
Exec. Ofc.: Lt. Col. Eustace R. Smoak
1st Battalion (Lt. Col. Marlowe C. Williams (WIA 22 Feb), Maj. Clay M. Murray (WIA 22 Feb), Maj. Robert H. Houser)
2nd Battalion (Lt. Col. Lowell E. English (WIA 2 Mar), Maj. George A. Percy)
3rd Battalion (Lt. Col. Wendell H. Duplantis)
Committed D+6:
9THMARINES.svg 9th Marine Regiment
Colonel Howard N. Kenyon
Exec. Ofc.: Lt. Col. Paul W. Russell
1st Battalion (Lt. Col. Carey A. Randall (to 6 Mar), Maj. William T. Glass (to 14 Mar), Lt. Col. Jack F. Warner)
2nd Battalion (Lt. Col. Robert E. Cushman, Jr.) [lower-alpha 4]
3rd Battalion (Lt. Col. Harold C. Boehm)
12th Marines logo.jpg 12th Marine Regiment (Artillery)
Lieutenant Colonel Raymond F. Crist Jr.
Exec. Ofc.: Lt. Col. Bernard H. Kirk
1st Battalion (Maj. George B. Thomas)
2nd Battalion (Lt. Col. William T. Fairbourn)
3rd Battalion (Lt. Col. Alpha L. Bowser, Jr.)
4th Battalion (Maj. Joe B. Wallen (to 20 Mar), Lt. Col. Thomas R. Belzer)
Arrived on March 20 and attached to 3rd Marine Division [2]
147RegimentCOA.jpg 147th Infantry Regiment (Ohio Army National Guard)
Colonel Robert F. Johnson
Exec. Ofc.: Lt. Col. Eustace R. Smoak
1st Battalion
2nd Battalion
3rd Battalion
Service troops
Colonel James O. Brauer (to 6 Mar), Colonel Lewis A. Hohn
3rd Engineer Battalion (Lt. Col. Nelson K. Brown)
3rd Medical Battalion (Cmdr. Reuben L. Sharp, USN)
3rd Motor Transport Battalion (Lt. Col. Ralph L. Schiesswohl)
3rd Pioneer Battalion (Lt. Col. Richard G. Ruby)
3rd Tank Battalion (Lt. Col. Richard K. Schmidt)
Never landed:
3rd Marine Regimental Crest.jpg 3rd Marine Regiment
Colonel James A. Stuart

Japan

Lieut. Gen. Tadamichi Kuribayashi Tadamichi Kuribayashi.jpg
Lieut. Gen. Tadamichi Kuribayashi

Lieut. General Tadamichi Kuribayashi , commanding
Colonel Tadashi Takaishi, chief of staff
21,060 total men under arms
Army

109th Division
145th Infantry Regiment
17th Mixed Infantry Regiment
26th Tank Regiment
2nd Mixed Brigade

Navy

125th Anti-Aircraft Defense Unit
132nd Anti-Aircraft Defense Unit
141st Anti-Aircraft Defense Unit
149th Anti-Aircraft Defense Unit

See also

Orders of battle involving United States Marine forces in the Pacific Theatre of World War II:

Sources

Notes

  1. Generated so much ill-will between the services that he was eventually reassigned stateside.
  2. Commanded the 1st Marine Division in the Vietnam War.
  3. Served as Commandant of the Marine Corps from 1948 to 1951.
  4. Commanded all Marine Corps forces in Vietnam from June through December 1967.

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References

  1. Morison, p. 40
  2. Army Boots on Volcanic Sands: The 147th Infantry Regiment at Iwo Jima (https://www.jstor.org/stable/26300958)