[3] During the Vietnam War, the battalion was organized under a four rifle company order of battle – E (Echo), F (Fox), G (Golf) and H (Hotel).

They fought the Battle of Guadalcanal for four months until they were relieved by elements of the United States Army's Americal Division.

2/7 landed on Cape Gloucester, New Britain on 26 December 1943 under the command of Lieutenant colonel Odell M. Conoley securing an airfield the first day.

The battalion continued to run patrols around the island to protect against guerrilla attacks from hold-out Japanese soldiers.

However, Chesty Puller's 1st Marines were having the worst time as they were on the left flank and adjacent to where the mountainous area on Peleliu called the Umurbrogal Pocket began – where all the Japanese holed up.

When they landed they were met by intense artillery and mortar fire from Japanese positions that had not been touched by the pre-invasion bombardment.

In addition they were called upon to keep the peace during the bloody civil war between the Chinese Nationalists and Communist forces.

His company's actions to keep the pass open, allowed these two regiments to perform their withdrawal from Yudam-ni and consolidate with the rest of the 1st Marine Division at Hagaru-ri.

The mission to relieve F/2/7 on top of Fox Hill also led to LtCol Raymond Davis, then commanding officer of 1st Battalion 7th Marines, receiving the Medal of Honor.

Qui Nhon, Chu Lai, Da Nang Air Base, Dai Loc and An Hoa.

2/7 relocated during January 1990 to Marine Corps Air Ground Combat Center Twentynine Palms, California, and participated in Operations Desert Shield and Desert Storm in Saudi Arabia and Kuwait from August 1990 through March 1991 when they redeployed back to the United States.

For the rest of the 1990s the battalion took part in the regular Unit Deployment Program (UDP) rotation to Okinawa.

[6] The battalion spearheaded the return of Marines to Afghanistan, and was engaged in heavy combat with insurgent elements throughout their deployment.

[7] 2/7 operated from Camp Bastion and bases in Sangin, Gereshk, Musa Qaleh, Now Zad, Delaram, Gulistan, Bakwa and Bala Baluk.

Missions have included training with foreign partners, providing base security, isolated-personnel recovery, & crisis response.

On 7-8 February 2018, elements of Combined Anti-Armor Team (CAAT) 2 were attached to US Special Operations forces at the Conoco Gas plant near Khasham, Dier ez-Zor, Syria, where they were attacked by 500 pro-regime militia and Russian Wagner mercenaries.

Additional elements of Weapons Company responded as a quick reactionary force (QRF) from nearby Firebase Ash-Shaddadi.