The Cuban intervention in Angola was the deployment of more than 50,000 Cuban troops to Angola between 1975 and 1991, the largest Soviet-bloc military commitment in sub-Saharan Africa and the decisive military fact of the late Cold War in southern Africa. The intervention was carried out in two main phases: the 1975–1976 defense of Luanda, and the 1980s war against South African and UNITA forces on the Angolan–Namibian border. It cost the lives of an estimated 2,000 Cuban soldiers, transformed the Cuban economy, and shaped the regional balance of power in southern Africa for a generation.
The first phase, Operation Carlota (November 1975 – April 1976), was a direct response to a request from the MPLA, which had taken Luanda at independence on November 11, 1975 but faced a South African armored advance from the south and a FNLA/Zairean thrust from the north. The first Cuban military advisers had arrived in August 1975 (some 480 personnel). On Castro’s orders of November 5, 1975, the deployment was expanded to 36,000 troops, organized as five infantry brigades with attached armor, artillery, and air-defense units. By March 1976, the Cuban forces — supported by roughly 1,000 Soviet military advisers and a continuous Soviet sealift — had stopped the South African column at the Battle of Bridge 14 on the Cuito River and pushed the FNLA out of the central provinces.
The second phase, 1976–1991, was a long counter-insurgency and conventional war against UNITA and the apartheid South African Defence Force (SADF). Cuban forces were concentrated on the southern border, where South African raids into Angola became routine — at Samba Grande in 1980, at Caiundo in 1985, and at Cuito Cuanavale in 1987–1988. The SADF crossed into Angola repeatedly in pursuit of SWAPO guerrillas of the Namibian liberation movement — the Cuban–Angolan forces were drawn into a regional war of growing intensity. The Battle of Cuito Cuanavale, in which 8,000 Cuban and Angolan troops withstood a 3,000-strong SADF armored thrust, was the largest conventional engagement in Africa since the Second World War.
The Cuban presence was scaled up to 50,000 troops in 1987 in preparation for a major campaign, and a 12,000-strong Cuban–Angolan force advanced into southern Angola in early 1988. The campaign, Operación Cuana Val, was the basis for the negotiated settlement of December 22, 1988 (the New York Accords) under which South Africa agreed to withdraw from Namibia (in fact carried out in 1989–1990) and to cease support for UNITA, and Cuba agreed to withdraw its troops in stages (in fact completed in May 1991).
The economic cost to Cuba was enormous. By 1988, the annual cost of sustaining the Cuban presence in Angola — 50,000 troops, 30,000 civilian advisers, and a continuous resupply effort — was running at roughly $1 million a day, almost entirely subsidized by the Soviet Union. The burden intensified the Cuban economy’s structural crisis of the 1990s, but it also gave Havana a political asset: Cuban influence in southern Africa, the Atlantic islands, and Angola’s oil sector survived the 1991 withdrawal and has been partly restored in the 2000s through Cuban military and intelligence cooperation with the MPLA government.
For a deeper treatment of the Cuban decision and the Cuban record in Angola, see the Angolan Civil War article. The standard monograph is Piero Gleijeses’s Conflicting Missions (2002) and Visions of Freedom (2013). For the broader context of Cuban internationalism, see the proxy wars overview.