By April 1952, the 1st CSG, commanded by Colonel Russell N. Jordahl, had nearly 1,400 Marines and Navy medical personnel stationed at various points between Japan and Korea.

At Kobe, Japan, the Support Company of 1st CSG processed Marine drafts arriving and departing Korea.

At Masan, the Supply Company of 1st CSG requisitioned for the division those Class II and IV items peculiar to the Marine Corps needs and forwarded them upon request.

During September 1986, a milestone was reached in the long-term effort to improve the organization of the Corps' FSSGs, with phase I of the reorganization underway.

Earlier that year, the decision was made to pursue the general reorganization concept contained in the Center for Naval Analyses, Combat Service Support Structure Study of 1985 to restructure the FSSG's functional battalions in a way that would facilitate deployment of Marine amphibious brigades and simplify task organizing for other MAGTF commitments.

Brigadier General James A. Brabham Jr., a native Pennsylvanian who served twice in Vietnam and as the Deputy J-4 for logistics at USCENTCOM, commanded I MEF's combat service support element – the 1st FSSG.

Expecting to be the 1st FSSG's operations officer upon arrival, Colonel Thomas E. Hampton, a former infantry officer and Vietnam war veteran from southern Illinois, was instead ordered by General Brabham to take charge of General Support Group (GSG).

The Marines and Sailors of 1st MLG were deployed to Iraq in support of Operation Iraqi Freedom on four occasions.

The 1st FSSG deployed to Kuwait in late 2002 as part of the I Marine Expeditionary Force (I MEF) buildup ahead of the invasion.

The Marines and Sailors of 1st FSSG, along with I MEF, redeployed back to the United States over the rest of the summer 2003.

[9] In February 2008, under the command of BGen Robert R. Ruark, executed a relief in place with the 2nd Marine Logistics Group (Forward) at Camp Taqaddum,[10] operating in Al Anbar Province.