Consolidated by U.S. Navy Seabee Museum, Naval History and Heritage Command
1943: The Acorn Assembly and Training Detachment was established at Port Hueneme, California. The chief functions of the unit were the organization, outfitting, and staging of Acorns. An Acorn was a “tailored” unit designed to carry out the rapid construction and subsequent operation of a landplane and seaplane advance base. Each Acorn had a construction battalion attached to it, as well as trained personnel to operate the control tower, field lighting, aerological unit, transportation, medical, berthing, and messing facilities. A Construction Battalion Maintenance Unit (CBMU) also accompanied each Acorn to maintain the base after the initial construction was completed and the construction battalion had been withdrawn. During the World War II, Acorns sent to such places at Guadalcanal, Espiritu Santo, Green Island, Rendova, Treasury Island, and Majuro.
1943: 78th NCB commissioned at NCTC Camp Peary, Magruder, Virginia.
1970: Seabee Team 0105 departed Vietnam for CONUS for team training.
1943: 84th NCB commissioned at NCTC Camp Endicott, Davisville, Rhode Island.
1945: 137th NCB commissioned at Advance Base Depot (ABD) Camp Thomas, Davisville, Rhode Island.
1968: Capt. R.D. Thorson, commander, 31st Naval Construction Regiment (NCR) presided over an awards ceremony held at CBC, Port Hueneme, California, where 12 NMCB 4 officers and men received decorations. The recognition included one Bronze Star with combat “V” that was awarded to Cmdr. R.M. Fluss, commanding officer, NMCB 4, six Navy Commendation Medals, and five Navy Achievement Medals. Fluss presented Meritorious Achievement Certificates-Vietnam (MACV) to 92 NMCB 4 personnel for meritorious service during the battalion’s Da Nang, RVN, deployment.
1974: Underwater Construction Team (UCT) 1’s permanent duty station changed from CBC Davisville, Rhode Island to Naval Amphibious Base (NAB) Little Creek, Virginia, effective July 1, 1974.
1951: Naval Mobile Construction Battalion (NMCB) 4 activated.
1966: An NMCB 1 advance party of one officer and 100 enlisted men departed Davisville, Rhode Island for Da Nang, Republic of Vietnam (RVN).
1968: The NMCB 4 main body deployed from Port Hueneme, California to Phu Bai, RVN. The battalion deployed to Vietnam seven weeks before the schedule deployment date.
1971: Cmdr. Don P. Johnson, Civil Engineer Corps (CEC), commanding officer of NMCB 10, assumed from Cmdr. J.A. Ruscyk, CEC, commanding officer of NMCB 4 tenancy of Camp Shields and the status of Pacific Fleet Alert Battalion.
1943: 81st Naval Construction Battalion (NCB) commissioned at Camp Peary, Magruder, Virginia.
1945: Chief of Naval Operations Fleet Admiral Ernest J. King approved the retention of construction battalions as a permanent and integral part of the postwar Navy. When originally established in the Second World War, the Seabee organization was meant to be only a wartime expedient.
1967: NMCB 4 began survey work on the Liberty Bridge project, Da Nang, RVN.
1969: NMCB 3 advance party returned to the continental United States (CONUS) via government aircraft.
1946: 86th NCB inactivated on Okinawa.
1966: NMCB 1 advance party arrived in Da Nang, RVN.
1968: Cmdr. D.N. Shockey, CEC, was relieved as commanding officer of NMCB 9 by Cmdr. J.A. Wright, CEC, at a formal change of command ceremony held at Camp Hoover, Da Nang, RVN.
1968: NMCB 4 arrived at Da Nang, RVN.
1943: 6th Naval Construction regiment (NCR) commissioned.
1944: 24th NCR established.
1974: Underwater Construction Teams (UCT) 1 and 2 commissioned with Officers in Charge.