In Operation Iraqi Freedom, 6th ESB was responsible for fueling coalition forces as they moved northward through Iraq, and were entrenched in combat during the Battle of Nasiriyah.

[1] Marines of the 6th ESB were awarded the Navy Presidential Unit Citation for "extraordinary heroism in action against an armed enemy" during Operation Iraqi Freedom.

It had been damaged by VBIED attacks in order stop the flow of Multi-National Force - Iraq supplies and reinforcements to Fallujah during their campaign against the insurgency there.

The majority of the company was based out of Camp Leatherneck, with small detachments of Bulk Fuels and Utilities Marines supporting more than a dozen sites throughout the Area of Operations.

Combined teams from the engineer, motor transport, and heavy equipment platoons conducted extensive construction projects and road repairs for infantry and special operations units throughout the northern half of Helmand Province.