2nd Combat Engineer Battalion 2nd Combat Engineer Battalion is a combat engineer battalion of the United States Marine Corps . They are based out of Marine Corps Base Camp Lejeune , North Carolina and fall under the command of the 2nd Marine Division and the II Marine Expeditionary Force . Mission . Enhance the mobility , counter mobility , and survivability of the Marine Division through combat and limited general engineering support . The Combat Engineer Battalion performs the following tasks : History . The 2nd Combat Engineer Battalion was activated on 1 November 1940 in order to support the 2nd Marine Brigade . With existing Company A and the activation of the Headquarters and Service Company , Companies B and C were organized 6 December 1940 in San Diego , California . On 1 April 1941 , the battalion was assigned to Division Special Troops of the 2nd Marine Division . On 4 November 1941 , 2nd Engineer Battalion was relocated to Marine Barracks , Navy Yard , Pearl Harbor , Hawaii . Upon Arrival , Headquarters and Service Company and Company A were assigned to Construct Camp Caitlin , Oahu . The 2nd Engineer Battalion was relocated on 13 May 1942 to Camp Elliot , San Diego . From here , engineers from Company A embarked for Guadalcanal , and participated in the landing on that island . On 8 September 1942 2nd Engineer Battalion was redesignated as " 1st Battalion , 18th Marines " . During World War II , the engineers of 18th Marines participated in Campaigns on Guadalcanal , Tarawa , Saipan , Tinian , and Okinawa . 18th Marines was redesignated 16 August 1944 as the 2nd Engineer Battalion . On 23 September 1945 , 2nd Engineer Battalion was redeployed to Nagasaki , Japan to begin its duty with the Occupational Force . The 2d Engineer Battalion relocated to Marine Corps Base Camp Lejeune , during July 1946 . A major redesignation took place on 17 May 1958 with 2nd Engineer Battalion becoming the 2nd Pioneer Battalion , 2nd Marine Division . Engineers with Battalion Landing Team ' s 1 / 8 , 3 / 6 , and 2 / 2 landed in Lebanon during the summer of 1958 . The 2nd Pioneer Battalion maintained a combat - ready posture during the October / November Cuban Missile Crisis while on maneuvers in the Caribbean . Another change of designation took place on 1 April 1976 when the 2nd Pioneer Battalion returned to its former designation as the 2nd Engineer Battalion . During the spring of 1965 , Marines from 2nd Engineer Battalion landed in the Dominican Republic on a peace keeping mission . Also , training exercises in numerous European and South American countries were supported by Marines from 2nd Engineer Battalion , who participated in civic action projects . On 15 April 1976 the 2nd Engineer Battalion was designated as 2nd Combat Engineer Battalion . In the 1970s and early 1980s the battalion furnished Combat Engineer Support to the Battalion Landing Teams ( BLT ) in the Mediterranean , the Caribbean , 29 Palms , Norway , and Guantanamo Bay , Cuba . From August 1982 to February 1984 Marines from 2nd Combat Engineer Battalion were part of the multinational peacekeeping force in Beirut , Lebanon . Late in October 1983 , Combat Engineers landed and occupied the island of Grenada with the 22nd Marine Amphibious Unit . The battalion continued to provide Combat Engineer Platoons to the BLT ' s of the 22nd and 26th Marine Expeditionary Unit s and support elements of the division throughout the world . During April 1990 , elements of the Battalion supported division units attached to Marine Forces Panama and participated in Operation Just Cause . In August 1990 , Company D , while deployed aboard the off the coast of West Africa participated in Operation Sharp Edge assisting in the evacuation of civilians from Liberia . During Operation Desert Storm the Battalion deployed in support of the 4th MEB and the 2nd Marine Division leading the division through the myriad of obstacle belts into Kuwait . Recently engineers have participated in military operations in Bosnia , Haiti , and Cuba , and most recently , participating in Operation Enduring Freedom and Operation Iraqi Freedom .