Located in Port Hueneme, California, FIRST NCR exercises command and control over subordinate Naval Construction Force units. During peacetime these are NMCB-18, NMCB-22 and NMCB-25.
The FIRST NCR was first authorized in July 1967 to exercise operational control and assist its subordinate units in achieving their mission. At the time of commissioning, FIRST NCR was located Armed Forces Reserve Center, Los Alamitos, California, moving to its present location at Port Hueneme, California in September 1994.
In 2003, the FIRST was activated to backfill for the THIRTIETH NCR when it went forward in support of OIF/OEF.
Again, in 2005, the FIRST was activated in support of OIF/OEF. This time the Regiment combined with the THIRTIETH to form a "combined" Regiment; a first ever approach. This allowed the THIRTIETH to break its one year deployment to Iraq into two six-month rotations.
Main body was activated in June 2008 and subsequently sent to Al-Anbar Province, Iraq. However, when support was needed for USMC forces in Afghanistan, the FIRST responded with an immediate departure to Kandahar Airfield. There, they transformed the single-tent, Camp Natasha into the vastly populated and more functional Camp Leatherneck, from which several operations were launched by U.S. Forces.