Congo River mentioned in 1535. Abraham Ortelius in his world map of 1564 labeled as "Manicongo" the city at the mouth of the river. The tribal names in "Kongo" possibly derive from a word for a public gathering or tribal assembly. The modern name of the Kongo people or "Bakongo" was introduced in the early 20th century. The name "Zaire" is from a Portuguese adaptation of a Kikongo word, ("river"), a truncation of ("river swallowing rivers"). The river was known as "Zaire" during the 16th and 17th centuries; "Congo" seems to have replaced "Zaire" gradually in English usage during the 18th century,
2/27th Battalion (Australia) 2/27th saw heavy fighting as the 21st Brigade led the 7th Division's efforts to capture the high ground around Shaggy Ridge. In mid-October, the 2/27th helped turn back a heavy Japanese counterattack around John's Knoll and Trevor's Ridge, before the 21st Brigade was relieved. Halfway through the campaign, in mid-November, Bishop was replaced as battalion commander by Lieutenant Colonel Keith Picken, and returned to a staff position. Picken subsequently led the battalion throughout the remainder of the war. By early January 1944, the 2/27th was withdrawn from the fighting and in March 1944 it returned to Australia. A further period