In 1944, Mandela joined the African National Congress (ANC) and worked with fellow party members, including Oliver Tambo, to establish its youth league, the ANCYL.
That same year, he met and married his first wife, Evelyn Ntoko Mase (1922-2004), with whom he had four children before their divorce in 1957.
By 1948 he was holding the position of National Secretary. In 1949 the African National Congress (ANC) supported the 'Programme of Action' handed in at their annual conference. The more radical members such as Mandela and Sisulu were elected to the program.