Portuguese Colonial War

On November 11, 1975, after the collapse of the Alvor Agreement coalition and the departure of the last Portuguese High Commissioner, Angola declared independence. The event triggered a prolonged civil war among rival factions.

Mozambique formally achieved independence on June 25, 1975, following negotiations culminating in the Lusaka Accord between FRELIMO and Portugal. The transition marked the end of the war in Mozambique and beginning of sovereign governance.

On January 15, 1975, Portugal and the main Angolan liberation movements (MPLA, FNLA, UNITA) signed the Alvor Agreement, outlining terms for Angola’s independence. The agreement called for independence to be granted on November 11, 1975.

On August 26, 1974, following the Carnation Revolution, Portugal and PAIGC signed the Algiers Accord, agreeing on the withdrawal of Portuguese troops from Guinea‑Bissau and diplomatic recognition of PAIGC’s government, paving the way for independence.

On April 25, 1974, Portugal experienced the Carnation Revolution, a largely bloodless military coup that overthrew the Estado Novo regime. The new government quickly moved to end the colonial wars and initiate decolonization.

In January 1973, Amílcar Cabral, charismatic leader of the PAIGC, was assassinated by dissident factions. Despite his death, PAIGC maintained momentum, highlighting the conflict’s political depth and international resonance.

On November 22, 1970, Portugal launched Operation Green Sea, an audacious amphibious raid on Conakry, Guinea. The objective was to overthrow Guinea’s leader Sékou Touré and strike at PAIGC supply lines. Though some POWs were freed, the coup failed and international condemnation ensued.

In August 1970, Portugal launched Operação Nó Górdio (‘Gordian Knot’) in northern Mozambique under General Kaúlza de Arriaga. This was the largest conventional campaign of the war, aiming to destroy guerrilla bases and regain control in a key region.

On March 27, 1968, following long‑term illness, Prime Minister António de Oliveira Salazar was replaced by Marcelo Caetano. The new leadership continued the war effort, though Caetano faced increasing internal and international pressure regarding the prolonged colonial conflicts.

The Mozambican War of Independence officially began on September 25, 1964, when FRELIMO guerrillas initiated armed actions against Portuguese colonial forces. This conflict rapidly spread, becoming a major front in the Portuguese Colonial War.

On January 23, 1963, the Guinea‑Bissau War of Independence began as PAIGC guerrillas launched insurgent operations against Portuguese rule in Portuguese Guinea. This theatre became known as “Portugal’s Vietnam” due to the intensity of guerrilla warfare and its political ramifications.

The Baixa do Cassanje uprising occurred on March 15, 1961, when plantation workers in northern Angola revolted against Portuguese colonial authorities. Their violent repression by Portuguese forces intensified the armed conflict and convinced Lisbon of the need for military escalation.

On February 4, 1961, the Portuguese Colonial War began with nationalist attacks against Portuguese installations in Luanda and other parts of Angola. These assaults marked the symbolic commencement of the armed struggle for Angolan independence against colonial rule by the Estado Novo regime.