Mukti Bahini ( Freedom fighters or Liberation Army were a Bengali resistance force from East Pakistan, who fought against the Pakistan Army in the Bangladesh Liberation War. The Pakistan Army launched military operations against Bengali civilians, students, intelligentsia, and armed personnel after sundown on March 25, 1971. In response, Bangladesh declared independence and Bengali military and paramilitary personnel, as well as civilians, started spontaneous resistance against the aggression. This was the formation of the Mukti Bahini. Later in April, Bangladesh Armed Forces was formed formally with Col. M. A. G. Osmani as the commander-in-chief, Lt. Col. Abdur Rob as the chief-of-staff and Capt. A. K. Khandaker as the deputy chief-of-staff. The armed forces as well as the paramilitary an