Decommissioned after World War II in December 1945.
Recommissioned for the Vietnam War on 12 August 1966 as Naval Mobile Construction Battalion 133 (NMCB-133)
(Note: if you are reading this from the NMCB-133 link on your Duty Station section, see other features on the Unit Page: personnel assigned, photos, history, web links, medals/ribbons, combat & operations, etc)
At mid-morning on 3 February 1974 on the northeastern edge of the U.S. Naval Base at Subic Bay in the Philippines, Captain Thomas J. Mitchell, CEC, USN, Commander of the 30th Naval Construction Regiment, Commander Leland R. Dobler, CEC, USN, Commanding Officer of Naval Mobile Construction Battalion 133, and Lieutenant Charles H. Jeffries, CEC, USN, Officer in Charge of Detachment WALLABY of that battalion, were riding in a jeep on an inspection tour of a section of perimeter road which was being worked on by Lieutenant Jeffries's detachment. The three officers were driving in an isolated area approximately seven miles from base headquarters in deep jungle along the boundary between the base and Bataan Province when unidentified terrorists ambushed them, cutting the three men down in a hail of fire. Seabees from Detachment WALLABY, who were working about half a mile away, heard the shooting, rushed to the ambush scene, and notified base headquarters. Medical personnel were immediately flown to the scene, but the three men were dead when they arrived. U.S. Marines and Philippine Constables immediately moved into area to locate the attackers, but they were unsuccessful and the attackers were never positively identified. To this day, the three officers remain the victims of anonymous terrorists