The OAS was formed from existing networks, calling themselves "counter-terrorists", "self-defence groups", or "resistance", which had carried out attacks on the Algerian National Liberation Front (FLN) and their perceived supporters since early in the war. It was officially formed in Francoist Spain, in Madrid in January 1961, as a response by some French politicians and French military officers to the 8 January 1961 referendum on self-determination concerning Algeria, which had been organised by President de Gaulle.
The OAS was formed from existing network,s calling themselves "counter-terrorists", "self-defence groups", or "resistance", which had carried out attacks on the Algerian National Liberation Front (FLN) and their perceived supporters since early in the war. It was officially formed in Francoist Spain, in Madrid in January 1961, as a response by some French politicians and French military officers to the 8 January 1961 referendum on self-determination concerning Algeria, which had been organised by President de Gaulle.