After having subdued the Nkhumbi people, Portuguese troops advanced from Huila southward into territories which were just claimed by Portugal but not yet under control. At Cunene River they were confronted with the resistance of two Ovambo peoples, the Cuamato and Cuanhama, led by their king Tchetekelo. When an advanced unit composed of 500 Portuguese soldiers and Humbi auxiliaries under captain Luís Pinto de Almeida crossed the river, about 300 men were massacred in an ambush.[1]