Babrak Karmal befriended fellow inmate Mir Akbar Khyber, who introduced Karmal to Marxism. Karmal changed his name from Sultan Hussein to Babrak Karmal, which means "Comrade of the Workers'" in Pashtun, to disassociate himself from his bourgeois background. When he was released from prison, he continued his activities in the student union, and began to promote Marxism. Karmal spent the rest of the 1950s and the early 1960s becoming involved with Marxist organizations, of which there were at least four in Afghanistan at the time; two of the four were established by Karmal. When the 1964 Afghan Provisional Constitution, which legalised the
Babrak Karmal 1981. In 1982 it was reported that the government spent around 22 percent of total expenditure. When the political solution failed (see "PDPA base" section), the Afghan government and the Soviet military decided to solve the conflict militarily. The change from a political to a military solution did not come suddenly. It began in January 1981, as Karmal doubled wages for military personnel, issued several promotions, and decorated one general and thirteen colonels. The draft age was lowered, the obligatory length of arms duty was extended and the age for reservists was increased to thirty-five years of age. In June