1975–1989
Cross-border war and regional operations
Beginning with South Africa's 1975 intervention in the Angolan civil war, its forces supported UNITA and attacked SWAPO bases, while the MPLA government, Cuban forces and Soviet-backed allies opposed them in a widening conflict.
As Portuguese rule collapsed in 1975, civil war among the MPLA, UNITA and FNLA drew in regional and global powers. South Africa launched Operation Savannah in October, advancing with allied Angolan forces. Pretoria cited threats to the South West African border and the Calueque hydroelectric and water scheme, as well as opposition to Soviet- and Cuban-supported MPLA control. The United States covertly supported anti-MPLA forces, while Cuba deployed troops for the MPLA and the Soviet Union supplied it. South Africa withdrew its conventional force in 1976 but continued supporting UNITA.
SWAPO operated from bases in Angola in its campaign for Namibian independence and launched infiltrations into South West Africa. This made the Namibian insurgency and Angolan civil war operationally connected without making them the same conflict.
The South African Defence Force conducted raids and major conventional operations against SWAPO, Angolan and Cuban forces and continued assisting UNITA. Opponents also attacked South African and allied positions and the Calueque installation. South Africa separately struck alleged ANC facilities elsewhere in the region, sometimes causing civilian casualties, while neighbouring governments provided varying degrees of sanctuary or support to liberation movements.
Military pressure did not produce a decisive settlement. Negotiations culminating in the 1988 Tripartite Accord linked the withdrawal of Cuban forces from Angola with implementation of the UN plan for Namibian independence.
Significance
The campaigns caused military and civilian losses across several countries, destabilised neighbouring states and ended only through negotiations linking Cuban withdrawal from Angola to Namibian independence.
Why it matters
The campaigns caused military and civilian losses across several countries, destabilised neighbouring states and ended only through negotiations linking Cuban withdrawal from Angola to Namibian independence.
Perspective notes
Pretoria cited protection of the South West African border, the Calueque water project, SWAPO infiltration and communist expansion. Angola and SWAPO treated South African operations as aggression and occupation. MPLA, UNITA, Cuba, the USSR and the United States pursued overlapping but distinct objectives.

