Congo River and "Congo" is the preferred English name in 19th-century literature, although references to "Zahir" or "Zaire" as the name used by the inhabitants remained common. The Democratic Republic of the Congo and the Republic of the Congo are named after it, as was the previous Republic of the Congo which had gained independence in 1960 from the Belgian Congo. The Republic of Zaire during 1971–1997 was also named after the river, after its name in French and Portuguese. The Congo's drainage basin covers , an area larger than India. The Congo's discharge at its mouth ranges from , with an
27th Marine Regiment (United States) South Vietnam and the 27th Marines was one of the units sent. The 27th Marines became the first Marine regiment to fly into a combat zone. Their deployment overseas put a severe strain on manpower in the Marine Corps and they were returned to the United States before the close of 1968. A homecoming parade was presented as a Memorial Ceremony downtown San Diego to the lives the regiment had given in Vietnam. The unit was then reassigned to MCB Camp Pendleton within the area of the base called Camp Margarita or the 33 Area. 27th Marine Regiment (United States)