Zaire Province a vassal state of the Kingdom of Portugal. In 1914, the Kongo monarchy was abolished after Portuguese suppression of several revolts. From 1885, Portuguese Angola included the district of Congo, which was split in 1919 into the districts of Cabinda and Zaire, respectively north and south of the Congo/Zaire River. During the 1961–1974 Angolan War of Independence, a large fraction of the Bakongo fled to the Republic of Zaire. Many of these refugees and their offspring returned after the Alvor Agreement recognised Angolan independence. Historical and cultural monuments include: M'Banza Congo (formerly São Salvador do Congo) is the provincial capital.
27th Tactical Air Support Squadron The 27th Air Refueling Squadron was activated at Bergstrom Air Force Base, Texas, in October 1953 and assigned to the 27th Strategic Fighter Wing. The mission of the unit was to provide global refueling for the Strategic Air Command (SAC) 27th and 12th Strategic Fighter Wings at Bergstrom and other USAF units as directed. The unit was inactivated in 1957 shortly after SAC transferred its fighters to Tactical Air Command and a SAC refueling unit was no longer required to support them. The 27th Tactical Air Support Squadron was activated at Davis-Monthan Air Force Base, Arizona in July 1977, but