This study aims to highlight the political and military struggle in South Africa against racial discrimination, also known as Apartheid. The national liberation movement and the struggle in South Africa are closely linked to the personality of the militant leader Nelson Mandela within the framework of the African National Congress (ANC). We examine the characteristics of the struggle in South Africa under this global leadership, as well as the extent of Algeria's contribution and its diplomacy in supporting African liberation movements in general, and the cause of the struggle in South Africa in particular. This falls within the framework of African solidarity and in accordance with the charters of the Algerian Revolution and the principles of Algeria's foreign policy.