Area from Durgapur to Dawki (Tamabil) of Sylhet District and the entire area up to the eastern borders of the district. The headquarters of the sector was at Banshtala.
• Major Mir Shawkat Ali (April 10, 1971 – February 14, 1972).
1. Muktapur (Captain Qazi Faruq Ahmed, Subsector Commander, 16 June 1971 till 1 February 1972; Subedar Mujibur Rahman, Second in Command; Nayeb Subedar Nazir Hussain, Admin in charge(non-combatant)).
2. Dawki (Subedar Major BR Chowdhury, (non-combatant)).
3. Shela (Captain Helal).
4. Bholaganj (Lieutenant Taheruddin Akhunji).
5. Balat (Sergeant Ghani, Captain Salahuddin and Enamul Haq Chowdhury).
6. Barachhara (Captain Muslim Uddin).
7. Captain Abdul Mutalib was in charge of Sangram Punji (Jaflong) until 10 May 1971.