In 1975, Jamba was named Secretary of State by Jonas Savimbi under UNITA in the "transition government" that operated from January 1975 to July of the same year in accordance with the Alvor Agreement.
Jamba became the Secretary of State for Jonas Savimbi's UNITA during the "transition government" established in January 1975 and operating until July of the same year, as per the Alvor Agreement.