Second Portuguese–Ovimbundu War

Second Portuguese–Ovimbundu War
	; Ovimbundu area within modern day Angola
Date	1890 – 22 March 1904
Location	Benguela Highlands and central Portuguese Angola
Result	Portuguese victory
Belligerents
Portuguese Empire	Ovimbundu Kingdoms Bailundo; Bié; Huambo; Civula; Kasongi; Civanda; Ngalanga; ; Kisanji; Luimbi;
Commanders and leaders
Carlos I; Cabral de Moncada; Pais Brandão; Joaquim Teixeira Moutinho; Pedro Massano de Amorim	Kalandula (POW); Mutu ya Kevela †; Samakaka; Livongue †; Civava †
Strength
750 troops; 1,000 Auxiliaries	10,000
Casualties and losses
Minimal	+2,000 casualties
	+120 civilians

The Second Portuguese–Ovimbundu War, also known as the Bailundo revolt and the National Liberation Revolt in Angola, was an armed conflict between the kingdoms of the Ovimbundu people, primarily the Bailundo kingdom, against the Portuguese Empire.

The conflict was motivated by Portuguese colonial ambitions, control of trade routes, and the sudden decline in the price of rubber, pitting the Ovimbundu people against European immigrants and colonial representatives.

Considered the largest military exercise on African soil against a colonial power before World War I, it lasted from 1890 to 1904, ending in a Portuguese victory.