U.S. Marines with 1st Battalion, 3rd Marines fire a 60mm mortar system during platoon attacks as part of Large Scale Exercise 2021, Marine Corps Base Hawaii, Aug. 6, 2021. LSE21 is a live, virtual, and constructive exercise employing integrated command and control, intelligence, surveillance, reconnaissance, and sensors across the joint force to expand battlefield awareness, share targeting data, and conduct long-range precision strikes in support of naval operations in a contested and distributed maritime environment. (U.S. Marine Corps photo by Cpl. Juan Carpanzano)U.S. Marines with Company A, 1st Battalion, 3rd Marine Regiment, 3d Marine Division, carry a simulated casualty at the Jungle Warfare Training Center, Okinawa, Japan, August 6, 2020. The Marines were participating in an air assault to increase their proficiency at air insertions and maneuvering through simulated enemy terrain. (U.S. Marine Corps photo by Cpl. Savannah Mesimer)
On May 1, 1942, the 1st Training Battalion was activated at Marine Corps Air Station New River, North Carolina. A month and a half later, on June 17, the unit was redesignated as the 1st Battalion, 3rd Marine Regiment.[1] The battalion received its first combat experience in November 1943 against the Japanese in the Battle of Bougainville. The battalion fought with distinction for nearly two months against stiff resistance in difficult terrain before being sent to Guadalcanal to prepare for the next stage of the Pacific Theatre.[2]
U.S. Marines from 1/3 fighting on Bougainville in 1943.
The Battle of Guam was the next combat assignment for 1st Battalion, 3d Marines. The amphibious assault on Guam began on July 21, 1944, with the battalion landing near Asan Point in western Guam. Once again, the battalion encountered fierce opposition and the fighting proved to be costly. Organized Japanese resistance officially ended on August 10 and Guam was declared “secured”. However, numerous Japanese remained operational in the jungle and refused to surrender. Subsequently, the battalion participated in “mopping-up” operations until it departed for Iwo Jima in February 1945.[2]
In early 1945, 1st Battalion, 3d Marines, as part of Regimental Combat Team 3, was to be the floating reserve for the amphibious assault of the Battle of Iwo Jima. However, the battalion was never called upon to land or to take part in the battle.
The battalion remained on Guam through the surrender of the Japanese in September 1945. Although the end of the war signified the end of hostilities, there was still much work to be done. The Islands in the Pacific held by the Japanese had to be demilitarized and the Japanese forces repatriated to mainland Japan, this job fell to 1st Battalion, 3d Marines, soon to be known as the “Chichi Jima” Marines. Chichi Jima was an Island fortress, often referred to as the Gibraltar of the Pacific, located in the Ogasawara Island chain 615 miles south of Tokyo. After 14 years of war in China and the Pacific, Japan had arrived at a mortifying surrender. At exactly 1015 on December 13, 1945, the Japanese flag flying over Chici Jima was lowered from its staff. The Japanese Color Guard folded the flag and presented it to the Commanding Officer of 1st Battalion, 3d Marines. At 1025, the Marine Drum and Bugle Corps sounded Colors and everyone present, American and Japanese alike, rendered a salute as Old Glory was raised to her lofty summit.
Vietnam War
A U.S. Marine from 1st Battalion, 3d Marines, moves a supposed NLF activist to the rear during a search and clear operation held by the battalion 15 miles (24km) west of Da Nang Air Base.U.S. Marines from 1/3 near Khe Sahn in 1966.
1st Battalion, 3d Marines became the second American infantry unit to enter South Vietnam. The battalion began its movement, via air, to Da Nang Air Base in early March 1965 and completed its movement by mid-March. Less than six months after its arrival, 1/3 was withdrawn to Okinawa. The battalion was sent back to Vietnam on November 18, 1965.
In 1969. the United States began to slowly withdraw combat units from Southeast Asia. One of the first Marine units to be notified to commence stand down operations was 1st Battalion, 3d Marines. The unit departed South Vietnam for the United States on October 5, 1969. Towards the end of the month the battalion arrived in California and was located at again at Camp Pendleton.
1980s
Alpha Company aboard USS Tuscaloosa in December 1989
Throughout the 1980s, 1/3 regularly deployed to Okinawa to serve as a forward staged unit in the Western Pacific area as part of the Marine Corps Unit Deployment Program. During the Unit Deployment Program, the battalion would regularly participate in exercises throughout the region, such as in Korea and Thailand. In December 1989, while at Okinawa, 1/3 responded to the 1989 Philippine coup attempt as part of an amphibious task force and sent Marines ashore to reinforce the American Embassy. The battalion formed the ground combat element of CTF-79 (Commander, Landing Force, Seventh Fleet).
The Gulf War and the 1990s
Weapons Platoon, Bravo Company in the Gulf War
In August 1990, 1st Battalion, 3d Marines deployed to Saudi Arabia for Operation Desert Shield and took up defensive positions along the coastal highway leading to Kuwait. In February 1991, 1/3 assaulted into Kuwait as part of the ground war of Operation Desert Storm to liberate the country from Iraqi occupation.
In October 2002, an Army Special Forces Sergeant First Class (SFC) was killed in the Southern Philippines by an IED.
April 2003, 1/3 departed Kaneohe for another UDP in Okinawa, Japan. Alpha company, with Weapons company reinforcements left for the Philippines as the MSE under the guise of JTF-510. Alpha company carried out many joint missions with Navy SEAL/s, SWCC, and the CIA in terrorist surveillance activities, and security missions in Zamboanga Bay.
In June 2004, 1/3 (also known at the time as BLT 1/3, and including Battery C 1st Battalion 12th Marines - also from MCBH) set off to tour what was known as a standard deployment around the South Pacific region with the 31st Marine Expeditionary Unit (MEU). In early September 2004, the unit arrived in Kuwait and soon after entered Iraq. The unit fought in the Second Battle of Fallujah as part of Regimental Combat Team 7 to clear the city of insurgents and reclaim the city. In one deployment, BLT 1/3 unfortunately lost more men compared to any Marine Corps Battalion during OIF/OEF. BLT 1/3 has produced one of very few nominations for the Medal of Honor thus far in the Global War on Terror, Sergeant Rafael Peralta.
On January 26, 2005, a CH-53E Super Stallion helicopter crashed in the Al-Anbar province taking with it the lives of 26 Kaneohe Bay Marines, along with one Navy Corpsman and four Marine aircrew from a mainland unit. The majority of the 27 Marines lost in the crash were from Charlie Company of Battalion Landing Team 1/3.[3] Battalion Landing Team 1/3 lost a total of 45 Marines during the course of their first combat tour in Iraq.[4][5]
In March 2007, 1st Battalion 3d Marines deployed to Haditha, Iraq. 1/3 lost no Marines during this deployment, which was a first for the Marine Corps since the start of OIF.[8]
The battalion deployed to Karma, Iraq from August 2008 - March 2009. One Marine was killed and five were injured on December 21, 2008.
The battalion again deployed to Afghanistan in November 2009 through June 2010, taking up positions in and around FOB Geronimo, within the district of Nawa-I-Barakzayi, Helmand Province. In February 2010, the battalion participated in Operation Moshtarak, the seizure of the Talibanstronghold of Marjah.[9] The activities of Bravo and Charlie Companies were covered extensively in a series of articles by C. J. Chivers in The New York Times, and in the "At War Blog" posted on The New York Times website. A total of five Marines were KIA, along with one British reporter this deployment.
The battalion deployed once more to Afghanistan in April 2011, taking up positions south of FOB Delhi, in Garmsir District, Helmand Province.
↑ Lindsay, Sgt. Joe (March 28, 2006). "Marines win villagers' trust". Marine Corps News. United States Marine Corps. Archived from the original on April 6, 2006. Retrieved March 30, 2006.
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 forms the III Marine Expeditionary Force. 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.
The 3rd Marine Logistics Group is the Logistics Combat Element (LCE) for III Marine Expeditionary Force currently headquartered on Camp Kinser, Marine Corps Base Smedley D. Butler, Okinawa, Japan. 3rd MLG provides combat service support (CSS) to III MEF units above the organic capability. CSS is the essential capabilities, functions, activities, and tasks necessary to sustain all elements of operating forces in theater at all levels of war. Combat service support includes, but is not limited, to supply, maintenance, transportation, general engineering, health services, and other services required by aviation and ground combat forces to permit those units to accomplish their missions.
Marine Light Attack Helicopter Squadron 267 (HMLA-267) is a United States Marine Corps helicopter squadron consisting of Bell AH-1Z Viper attack helicopters and Bell UH-1Y Venom utility helicopters. Nicknamed the "Stingers", the squadron is based at Marine Corps Air Station Camp Pendleton, California and falls under the command of Marine Aircraft Group 39 (MAG-39) and the 3rd Marine Aircraft Wing.
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The 3d Marine Littoral Regiment is a regiment of the United States Marine Corps that is optimized for littoral maneuver in the Indo-Pacific Theater. Based at Marine Corps Base Hawaii, the regiment falls under the command of the 3rd Marine Division and the III Marine Expeditionary Force. It was known as the 3rd Marine Regiment from 1914 to 2022, when it was renamed as part of the Commandant of the Marine Corps' Force Design 2030 initiative. The 3d MLR has participated in the 2022 and 2023 Balikatan exercises in Northern Luzon, Philippines.
3rd Battalion, 3rd Marines, abbreviated as (3/3), was an infantry battalion of the United States Marine Corps, based out of Kaneohe, Hawaii. Known as either "Trinity" or "America's Battalion", the unit normally fell under the command of the 3rd Marine Regiment of the 3rd Marine Division. When fully manned, the unit consisted of approximately 1000 U.S. Marines and United States Navy Sailors. Like most 20th century model infantry battalions of the U.S. Marine Corps, 3rd Battalion 3rd Marines was made up of three rifle companies, and a Headquarters and Services (H&S) company. The battalion was originally formed at Marine Corps Base Camp Lejeune, North Carolina in 1942 and saw action on both Bougainville and Guam during World War II, where it was awarded its first Presidential Unit Citation and Navy Unit Commendation. Marines in the battalion were also awarded one Medal of Honor and seven Navy Crosses during the war.
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United States Marine Corps 
Lieutenant Colonel Mark A. Lenzi
