The battalion boarded ships for the Pacific Theater and World War II, where they saw their first action of the war at Guadalcanal. Under the leadership of the Battalion Commander, Lieutenant Colonel Lewis B. “Chesty” Puller, the Battalion distinguished themselves many times over for valor and bravery as they valiantly held their positions against the onslaught of a regiment of seasoned Japanese attackers.

It was also during this campaign that the legendary Sergeant “Manila John” Basilone became the first enlisted man in World War II to be awarded the Medal of Honor. Throughout the remainder of the war, the “First Team” distinguished themselves during many different campaigns, including Peleliu and Okinawa. Finally, the Battalion deployed to North China for occupation duty at the end of the war.

In response to the Communist aggression in Korea, the Battalion was again called into action. On 21 September 1950, 1st Battalion, 7th Marines made an amphibious landing at Inchon, Korea. Once more the “First Team” distinguished themselves in the battle as they took part in operations such as HOOK, RENO, and VEGAS, as well as fighting their way to and from the Chosin Reservoir.

In August 1965, the Battalion was once again called to service, this time in the Republic of Vietnam. For the next five years, the “First Team” participated in numerous operations such as STARLIGHT, PIRANHA and OKLAHOMA HILLS. During these operations and many others, the Battalion was honored repeatedly, earning the Presidential Unit Citation Streamer four times and the Meritorious Unit Commendation Streamer three times.

The first unit to man defensive positions in Saudi Arabia during Operation DESERT SHIELD in August of 1990. The unit was an integral member of Task Force Ripper. As DESERT SHIELD became DESERT STORM, 1st Battalion, 7th Marines participated in the diagonal thrust into the heart of Kuwait City, spearheading the liberation of Kuwait from Iraq.

On 11 December 1992, the first elements of 1st Battalion, 7th Marines arrived at Mogadishu, Somalia for Operation RESTORE HOPE. Battalion operations were conducted in Baidoa, Bardera, Oddur, Afgoye, and Mogadishu. 1st Battalion, 7th Marines relieved Task Force Mogadishu for occupation of the Stadium Complex in Mogadishu, Somalia on 25 January 1993.

In January 2003, the Battalion was once again called into action for Operation IRAQI FREEDOM. On 18 March 2003, 1st Battalion, 7th Marines crossed the Iraqi border from Kuwait on their march toward Baghdad. The Battalion saw significant combat action along the way to and in the streets of the Iraqi capital. On 23 April, the Battalion turned over control of their sector to the US Army and took up positions in the holy city of An Najaf. After countless extensions, 1st Battalion, 7th Marines redeployed to Twentynine Palms, California on 5 October 2003.

During the Battalion regeneration phase, the Battalion demonstrated exceptional creativity and organizational skill creating, developing, and facilitating an extensive Security and Stability (SASO) training package. This training evolution was implemented in preparation for deployment to Iraq in support of Operation IRAQI FREEDOM II.

In August 2004, 1st Battalion, 7th Marines deployed to Western Iraq in support of Operation IRAQI FREEDOM II. There the Battalion conducted security operations in the cities and roadways along the Euphrates River and Syrian border to include Husaybah, Karabilah, Sada, Ubaydi, Al Qaim, Haditha, Hit and Haqlaniyah. Involved in combat operations daily, the Battalion conducted mounted and dismounted urban patrols, cordon and knocks, Main Supply Route (MSR) security, sweep operations, and border security to clear the Battalion’s Area of Operation (AO) of enemy insurgents and provide stable conditions for the continued development of a legitimate Iraqi government.

In March 2005, the Battalion redeployed to Twentynine Palms and immediately began 10 months of intensive training in preparation for their return to Iraq in support of Operation IRAQI FREEDOM 05-07.

From February through September 2006, 1st Battalion, 7th Marines deployed to the Al Qaim Region in Western Iraq. During this tour, the Marines of the “First Team” enjoyed unprecedented success in battling the counterinsurgency and establishing legitimate civilian authority. The Battalion occupied 15 Platoon and Company battle positions which controlled over 5,000 square miles in the Western Euphrates River Valley. Each platoon was partnered with an Iraqi Army Platoon and members of the local constabulary. During the deployment, 1st Battalion, 7th Marines re-established a non-existent Iraqi Police Force to an end-strength of over 1,300 new officers and five police stations. Local Iraqi civil leaders were fully engaged by the Battalion leadership at all levels which yielded tremendous impact on security throughout the Al Qaim region and in so doing, created the model for Dispersed Operations throughout the Iraq theater.

From September 2006-August 2007, 1st Battalion, 7th Marines conducted a comprehensive training cycle on a compressed timeline by executing five Battalion-level field exercises and Mojave Viper. These events prepared the Battalion for the next deployment to the Western Euphrates River Valley.

In August 2007, the “First Team” deployed to Hit, Iraq in support of Operation IRAQI FREEDOM 07.2. The Battalion was partnered with two Iraqi Army Battalions, two Iraqi Police District Headquarters, and five Iraqi Police Stations and continued its fight against the insurgency by conducting raids, desert interdiction operations, and cache searches. Not only did the Battalion achieve great success by detaining over 100 insurgents and locating many weapons caches, including some on the islands in the Euphrates, the “First Team” also set the standard by transitioning many of the cities back over to Iraqi control. This progressive approach toward counterinsurgency operations empowered the local government and security forces to “police their own” and facilitated force protection measures for Coalition Forces. In March 2008 the Battalion re-deployed back to Marine Corps Air Ground Combat Center, Twentynine Palms.

In April 2008, the Battalion began 10 months of intensive training in preparation for their return to Iraq in support of Operation IRAQI FREEDOM 09.1.

In February 2009, 1st Battalion, 7th Marines deployed to Karmah, Iraq where the Battalion conducted two near simultaneous Relief in Place/Transfer of Authority (RIP/TOA) with 1st Battalion, 3d Marines in Karmah and 1st Battalion, 4th Marines in Fallujah in support of Operation IRAQI FREEDOM 09.1. The Battalion’s Combined Area of Overwatch (CAO) spanned 2,500 square kilometers and the Battalion partnered with two Iraqi Army Battalions, two Provisional Security Force Battalions, and 37 Iraqi Police Stations. The Battalion’s focus of effort was on developing the professionalism and coordination amongst the Iraqi Security Forces and supporting the development of government institutions and essential services. Through tactical combined operations, intelligence sharing and coordination meetings, the Iraqi Security Forces in Karmah become a much more proficient force and demonstrated the ability to neutralize the insurgency in Karmah with limited Coalition Force assistance. As part of the post Status of Forces Agreement of January 2009, the “First Team” shaped its CAO so that it could be managed by a much smaller coalition unit. The Battalion retrograded all its equipment prior to redeployment and demilitarized all seven of its original fixed sites. During the deployment, the Battalion helped to strengthen the local government, improve essential services, and professionalize the Iraqi Security Forces which were instrumental to a free and sovereign Iraq. The Battalion redeployed to Twentynine Palms in September 2009.

From July 2010 1st Battalion 7th Marines deployed to Camp Hansen, Okinawa, Japan, in support of the 31st MEU. Where the Battalion started our operation planning prior to boarding ship with a MEU-EX, and a COMM-EX. In August 2010 the Battalion sent an advance party to Board and setup the Marine network aboard the USS Denver (LPD-9). September 2010, 1st Battalion 7th Marines boarded the USS Essex (LHD-2), USS Denver (LPD-9), and USS Harpers Ferry (LSD-49). The 31st MEU conducted a bilateral exercise with the Philippines Marines (PHILMARS). The exercise was turned into a Humanitarian effort. The 31st MEU after afloat for 3 months returned to Okinawa, Japan.

In 2012 Suicide was deployed to Afghanistan in Sangin Valley at FOB Jackson and conducted multiple combat operations with kinetic contact. Suicide returned to Twentynine Palms in early 2013 to prepare for a return on their next deployment. Suicide deployed again to FOB Jackson in 2014 for retrograde and security detail for ANA medical transport. After the retrograde, the company was placed in Camp Dwyer for mounted patrols until the end of their deployment and returned home in late 2014.  

In October of 2015, the Battalion deployed as the Ground Combat Element in support of Special Purpose Marine Air Ground Task Force-Crisis Response-Central Command 16.1. During the deployment, Marines and Sailors from the battalion conducted distributed operations in Jordan, Kuwait, and Iraq. The battalion returned to Twentynine Palms, California in April of 2016.

In March 2017, the Battalion deployed as the Ground Combat Element in support of Special Purpose Marine Air Ground Task Force-Crisis Response-Central Command 17.2. During the deployment, Marines and Sailors from the battalion conducted operations in Jordan, Kuwait, and Iraq. The battalion returned to Twentynine Palms in October of the same year.

In April of 2019, the Battalion deployed as the Ground Combat Element in support of Special Purpose Marine Air Ground Task Force-Crisis Response-Central Command 19.1. The combat deployment placed Marines and Sailors at 21 sites across six countries within the U.S. Central Command Area of Responsibility. Elements of the battalion reinforced the U.S. Embassy in Iraq and participated in operations in Syria and Afghanistan. The Battalion returned to Twentynine Palms in October of the same year.

The Battalion deployed to Australia as the Ground Combat Element in support of Marine Rotational Force-Darwin 23.1. During the deployment, the battalion participated in multiple theater security cooperation exercises, including Koolendong ’21.

The Battalion deployed in support of the Unit Deployment Program-Hawaii 23.1 rotation to Okinawa, Japan. During the deployment, elements from the Battalion participated in Exercise Cobra Gold in Thailand, Exercise Fuji Viper in mainland Japan, and the Korean Marine Exchange Program in the Republic of South Korea.