an Entity references as follows:
Operation Savannah was the South African code name for their military incursion into Angola in 1975–1976. It was part of the South African Border War and arose due to the Angolan War of Independence. The operation also materially influenced the subsequent Angolan Civil War. South African forces invaded deep into Angola with the objective of driving the MPLA, Soviet and Cuban forces out of southern Angola so as to strengthen the position of UNITA, the main opponent of the MPLA and an ally of South Africa.