The battalion was first formed on 16 September 1942 as 1st Battalion, 19th Marine Regiment. Two years later on 16 August 1944 they were re-designated the 3d Engineer Battalion. The battalion was deactivated at Marine Corps Base Camp Pendleton, California on 30 November 1945. From August 1957 until January 1962, the battalion was designated 3d Pioneer Battalion.
In September 1975, the Battalion was redesignated as 3d Combat Engineer Battalion. 3d CEB provided three companies to Operations Desert Shield/Desert Storm between August 1990 and March 1991. "Alpha" Company deployed from Marine Corps Base Hawaii with the 1st Marine Expeditionary Brigade, "Bravo" Company deployed via amphibious shipping 15 August 1990 from Okinawa, and "Charlie" Company landed in Saudi Arabia five days before the air war began. The Marines from 3d CEB participated in breaching operations with "Task Force Grizzly" and "Task Force Papa Bear." Once in country, Alpha Co, 3rd CEB was soon assigned to 1st CEB and was referred to as "Alpha 3rd", to distinguish them from Alpha Company, 1st CEB. One platoon from Bravo Company, 3rd CEB, 3rd Mar Div, Okinawa, arrived in country via amphibious shipping and was added to "Alpha 3rd'" to become the company's 3rd platoon. 1st CEB supported Taskforce Ripper, . "Alpha 3rd'", was designated an Obstacle Clearing Detachment and was assigned to operate along with 1st Battalion 5th Marines, Company A, 3rd Assault Amphibian Battalion and Company A 1st Tank Battalion as the lead element of Task Force Ripper to breach minefields. Alpha Company 3rd' performed one minefield breach on the 1st mine field belt, and one breach on the second minefield breach which was defended by the Iraqi forces. "Alpha Company '3rd" also supplied a squad of engineers to conduct breaching operations for Task Force Shepard. In 1995, 3d CEB was deactivated. Their numbers were dispersed to other combat engineers units throughout the Marine Corps. The battalion was renamed Combat Engineer Company and was folded into Combat Assault Battalion of the 3rd Marine Division.
Alpha Company was stood up in Twentynine Palms, California the autumn of 2007. The company, minus its 2nd Platoon, deployed to Iraq in support of Operation Iraqi Freedom and fell under the command of Regimental Combat Team 5 during 2008. The 2nd Platoon deployed at about the same time to Afghanistan in support of Operation Enduring Freedom with the 2nd Battalion, 7th Marines operating throughout Helmand and Farah Provinces. Bravo Company was stood up in November 2008 with three full strength line platoons. The battalion will also have a full company to facilitate the use of the new Assault Breacher Vehicle. In April 2010 Alpha Company, along with a company sized element from First Tank Battalion,deployed as a theatre asset to Helmand Province forces as Route Clearance, in support of 3rd Battalion 7th Marines. Alpha Company was then dispatched across Helmand Province including the districts of Marjeh, Musa Qala, and the infamous battle of Sangin. In August 2011 Bravo Company deployed to Helmand Province, again, in support of 3rd Battalion 7th Marines and 2nd Battalion 4th Marines. Alpha Company deployed again in 2013 with 1st Platoon direct supporting to 2nd Battalion 8th Marines and 2nd Platoon direct supporting 3rd Battalion 4th Marines Bravo Company deployed to Afghanistan again in 2013 as a route clearance company of 3rd Combat Engineer Battalion. 3d Combat Engineer Battalion deployed to Helmand Province, Afghanistan in support of Operation Enduring Freedom during 2010, 2011, and 2013.
Unit awards
A unit citation or commendation is an award bestowed upon an organization for the action cited. Members of the unit who participated in said actions are allowed to wear on their uniforms the appropriate ribbon of the awarded unit citation. 3rd Combat Engineer Battalion has been awarded the following:
