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
Sultan Mohammed Ali al-Kitbi Sultan Mohammed Ali al-Kitbi Sultan Mohammed Ali al-Kitbi (1970, United Arab Emirates—14 December 2015, Taiz, Yemen) was a colonel of the United Arab Emirates Army who became one of the most senior officers killed during the Saudi Arabian-led intervention in the Yemeni civil war. He was also the highest ranking UAE officer to have been killed. In his legacy, the standard issue of the UAE armed forces rifle, the CAR 816, is named Caracal Sultan and bears an engraving honoring him. Mohammed Ali al-Kitbi was born around 1970 in the United Arab Emirates and has served in its armed forces