1st Marine Division

First Marine Division1stU.S. 1st Marine DivisionUS 1st Marine Division1st Marine Division (Reinforced)First Marine Division (Reinforced)1st Marine Brigade1st Marine Division (United States)1st Marine1st Marine Division Association
The 1st Marine Division (1st MARDIV) is a Marine infantry division of the United States Marine Corps headquartered at Marine Corps Base Camp Pendleton, California.wikipedia
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5th Marine Regiment

5th Marines5thRegimental Combat Team 5
It is the most highly decorated regiment in the Marine Corps and falls under the command of the 1st Marine Division and the I Marine Expeditionary Force (I MEF).

1st Reconnaissance Battalion

1st Recon Battalion1st1st Marine Division Recon Company
It falls under the command of the 1st Marine Division and the I Marine Expeditionary Force (I MEF).

7th Marine Regiment

7th MarinesRegimental Combat Team 7U.S. 7th Marine Regiment
In 1965, the 7th Marine Regiment participated in Operations Starlite and Piranha, the first major engagements for American ground troops in South Vietnam.
Nicknamed the "Magnificent Seventh", they fall under the command of the 1st Marine Division and the I Marine Expeditionary Force.

Marine Corps Base Camp Pendleton

Camp PendletonCamp Pendleton, CaliforniaCamp Pendelton
The 1st Marine Division (1st MARDIV) is a Marine infantry division of the United States Marine Corps headquartered at Marine Corps Base Camp Pendleton, California.
By October 1944, Camp Pendleton was declared a "permanent installation" and by 1946, it became the home of the 1st Marine Division.

11th Marine Regiment

11th Marines4th Battalion, 11th Marines11th Marine Artillery Regiment
Known as the "Cannon Cockers", the regiment falls under the command of the 1st Marine Division and the I Marine Expeditionary Force.

1st Tank Battalion

1stDelta Company, 1st Tank BattalionTask Force Papa Bear
It falls under the command of the 1st Marine Division and I Marine Expeditionary Force.

1st Marine Regiment

1st MarinesRegimental Combat Team 11st
The brigade consisted of the Fixed Defense Regiment and the Mobile Defense Regiment, later designated as the 1st and 2nd Regiments, 1st Brigade, respectively.
The regiment, sometimes known as "Inchon" or Regimental Combat Team 1, falls under the command of the 1st Marine Division and the I Marine Expeditionary Force.

3rd Light Armored Reconnaissance Battalion

3rd LAR3rd LAR Battalion3rd
Their primary weapon system is the LAV-25 and they are part of the 1st Marine Division and I Marine Expeditionary Force.

3rd Assault Amphibian Battalion

3rd Amphibian Tractor Battalion3d Assault Amphibian Battalion
The battalion is part of the 1st Marine Division and the I Marine Expeditionary Force.

1st Combat Engineer Battalion

1st Engineer Battalion1st Pioneer Battalion1st Marine Engineer Battalion
The unit, nicknamed "The Super Breed", is based at Marine Corps Base Camp Pendleton, California and falls under the command of the 1st Marine Division and the I Marine Expeditionary Force.

1st Light Armored Reconnaissance Battalion

1st1st LAR1st Light Armored Infantry Battalion
The Marine Corps contingent included the 1st Light Armored Reconnaissance Battalion, commanded by Marine Corps General John F. Kelly.
They fall under the command of the 1st Marine Division and the I Marine Expeditionary Force.

Ground combat element

Battalion Landing TeamBattalion Landing TeamsBLT
It is the ground combat element of the I Marine Expeditionary Force (I MEF).

Alexander Vandegrift

Alexander A. VandegriftAlexander Archer VandegriftVandegrift
Attached to the division was the 1st Parachute Battalion, which along with the rest of the division, conducted landing rehearsals from 28 to 30 July on Koro Island, which Major General Alexander Vandegrift described as a "disaster".
During World War II, he commanded the 1st Marine Division to victory in its first ground offensive of the war, the Battle of Guadalcanal.

Battle of Peleliu

PeleliuPeleliu operationinvasion of Peleliu
Others were awarded for the battles of Peleliu and Okinawa.
U.S. Marines of the 1st Marine Division, and later soldiers of the U.S. Army's 81st Infantry Division, fought to capture an airstrip on the small coral island of Peleliu.

23rd Infantry Division (United States)

Americal Division23rd Infantry DivisionAmerical
The division as a whole would fight in the Guadalcanal Campaign until relieved at 1400 on 9 December 1942 by Alexander Patch's Americal Division.
The 164th Infantry Regiment of the Americal Division went into action on Guadalcanal on 13 October 1942 alongside the 1st Marine Division as the first United States Army unit to conduct an offensive operation against the enemy in either the Pacific or European Theater of Operations during World War II.

United States Marine Corps

U.S. Marine CorpsMarinesMarine Corps
The 1st Marine Division (1st MARDIV) is a Marine infantry division of the United States Marine Corps headquartered at Marine Corps Base Camp Pendleton, California.
The U.S. Army's X Corps, which included the 1st Marine Division and the Army's 7th Infantry Division, regrouped and inflicted heavy casualties during their fighting withdrawal to the coast, known as the Battle of Chosin Reservoir.

Battle of Okinawa

Okinawainvasion of Okinawaassault and occupation of Okinawa Gunto
Others were awarded for the battles of Peleliu and Okinawa.
The United States created the Tenth Army, a cross-branch force consisting of the 7th, 27th, 77th, and 96th infantry divisions of the US Army with the 1st, 2nd, and 6th divisions of the Marine Corps, to fight on the island.

Battle of Cape Gloucester

Cape GloucesterCape Gloucester, New BritainCape Gloucester operation
They came ashore at the Battle of Cape Gloucester on 26 December 1943 and fought on New Britain until March 1944 at such places as Suicide Creek and Ajar Ridge.
It was the second landing the US 1st Marine Division had conducted during the war thus far, after Guadalcanal.

Paramarines

Paramarine1st Parachute Battalion1st Marine Parachute Battalion
Attached to the division was the 1st Parachute Battalion, which along with the rest of the division, conducted landing rehearsals from 28 to 30 July on Koro Island, which Major General Alexander Vandegrift described as a "disaster".
The 1st Parachute Battalion was attached to the 1st Marine Division for the invasion of Guadalcanal.

2nd Marine Regiment

2nd MarinesRegimental Combat Team 22d Marines
The brigade consisted of the Fixed Defense Regiment and the Mobile Defense Regiment, later designated as the 1st and 2nd Regiments, 1st Brigade, respectively.
The ships sailed combat-loaded and ready for landing operations on arrival from San Diego on 1 July to the South Pacific in July 1942, to reinforce the 1st Marine Division during the Battle of Guadalcanal in 1942-43.

Marine Raiders

Marine Raider1st Marine Raider Battalion2nd Marine Raider Battalion
The 1st Raider Battalion was on New Caledonia, and the 3rd Defense Battalion was in Pearl Harbor.
On 7 August 1942, Edson's 1st Raider Battalion, assigned to the 1st Marine Division, landed on Tulagi in the British Solomon Islands Protectorate as the opening phase of the Guadalcanal Campaign.

USS Texas (BB-35)

USS ''TexasTexasUSS ''Texas'' (BB-35)
The 1st Marine Division was activated aboard the USS Texas on 1 February 1941.
In February 1941, the US 1st Marine Division was activated aboard Texas.

Marine Corps Recruit Depot Parris Island

Parris IslandMarine Barracks Parris IslandMCRD Parris Island
In May 1941, the 1st MARDIV relocated to Quantico, Virginia and Parris Island, South Carolina and in April 1942, the division began deploying to Samoa and Wellington, New Zealand.
From then until the 1st Marine Division withdrew from Korea, Parris Island drill instructors trained more than 138,000 recruits.

III Marine Expeditionary Force

III Marine Amphibious ForceIII Amphibious CorpsIII Marine Amphibious Corps
They landed on 15 September 1944 as part of the III Amphibious Corps assault on the island.
7 May 1965, III MEF was re-designated as III Marine Amphibious Force (III MAF) and consisted of the 1st Marine Division, 3rd Marine Division and the 1st Marine Aircraft Wing.

New Britain campaign

New BritainBismarck Archipelago operationsBismarck Archipelago operation
The division would next see action during Operation Cartwheel which was the codename for the campaigns in Eastern New Guinea and New Britain.
It was later followed by the 1st Marine Division before it handed over to the 40th Infantry Division, which in turn handed over to the Australian 5th Division.