Cuban intervention in Angola

The Cuban intervention in Angola (codenamed Operation Carlota) began on 5 November 1975, when Cuba sent combat troops in support of the communist-aligned People's Movement for the Liberation of Angola (MPLA) against the pro-western coalition of the National Union for the Total Independence of Angola (UNITA), and the National Liberation Front of Angola (FNLA). The intervention came after the outbreak of the Angolan Civil War, which occurred after the former Portuguese colony was granted independence after the Angolan War of Independence.

Source: Wikipedia — Cuban intervention in Angola (CC BY-SA 4.0)