Naval Mobile Construction Battalion 25 or NMCB 25 is a Navy Reserve Seabee unit that is headquartered at Port Hueneme, CA. Its World War II predecessor was one of three CBs transferred to the Marine Corps in the late summer of 1942 as combat engineers. Those three battalions were attached to composite Marine Engineer Regiments as the third battalion of their respective regiment. All of them remained with the Marine Corps for the next two years before they were released and returned to the Navy. At the end of World War II the battalion was decommissioned. In 1961, it was recommissioned in the Naval Construction Force Reserve where it remains today.
19th Marines insignia. The 25th CB was third battalion in the 19th Regiment.p.12
CB Navy Yard Bougainville with the Seabee Expression (January 1944)
The 53rd CB, which was formed from B Co 25th CB, built the road behind this 2nd Marine Raider Battalion sign on Bougainville. The Navy had transferred B Co 25th CB to a different Marine Corps battalion; when the Marines needed another CB, B Company was used to commission the 53rd CB, attached to I Marine Amphibious Corps. (November 1943)
Amphibious Construction Battalion TWO was an amphibious construction battalion in the United States Navy based in Little Creek, Virginia. ACB 2 was decommissioned on 31 March 2023.
On 15 July 1958, Amphibious Construction Battalion TWO (PHIBTWO) assist Marines with landing at Beirut, Lebanon. Seabees with PHIBTWO supplied causeway teams to provide pontoons for troops, vehicles and supplies to pass to and from LCUs.(Seabee Museum)
Tektite I assembled by ACB 2 during 1969. (NURP)
US Navy 030404-N-1050K-023U.S. Seabees from ACBs 1 and 2 place a deck section in the assembly of the Elevated Causeway System-Modular (ELCAS (M)) at Camp Patriot, Kuwait (Apr 4, 2003). It was the first time the ELCAS/M (length 1,400-feet) was assembled in a combat operation.