1st Combat Engineer Battalion is a combat engineer battalion of the United States Marine Corps

United States Marine Corps

The United States Marine Corps is a branch of the United States Armed Forces responsible for providing power projection from the sea, using the mobility of the United States Navy to deliver combined-arms task forces rapidly. It is one of seven uniformed services of the United States...

. The unit, nicknamed "The Super Breed", is based at Marine Corps Base Camp Pendleton

Marine Corps Base Camp Pendleton

Marine Corps Base Camp Pendleton is the major West Coast base of the United States Marine Corps and serves as its prime amphibious training base...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 and falls under the command of the 1st Marine Division and the I Marine Expeditionary Force.
Provide mobility, counter mobility, survivability, and limited general engineering support to the 1st Marine Division.

• Headquarters and Service Company
  Headquarters and Service Company
  A Headquarters and Service Company is a company sized military unit, found at the battalion level and higher in the United States Marine Corps. In identifying a specific headquarters unit, it is usually referred to by its abbreviation as H&S...
  
  
• Alpha Company
• Bravo Company
• Charlie Company
• Delta/Engineer Support Company
• Mobility Assault/Route Clearance Company

The battalion was formed on 24 February 1941 at Guantanamo Bay

Guantanamo Bay Naval Base

Guantanamo Bay Naval Base is located on of land and water at Guantánamo Bay, Cuba which the United States leased for use as a coaling station following the Cuban-American Treaty of 1903. The base is located on the shore of Guantánamo Bay at the southeastern end of Cuba. It is the oldest overseas...

, Cuba

Cuba

The Republic of Cuba is an island nation in the Caribbean. The nation of Cuba consists of the main island of Cuba, the Isla de la Juventud, and several archipelagos. Havana is the largest city in Cuba and the country's capital. Santiago de Cuba is the second largest city...

, as the 1st Pioneer Battalion, 1st Marine Division to be a specialized unit to conduct shore party operations during Amphibious assaults, and to provide close combat engineer support to the Marine infantry.