Mymensingh and Tangail along with parts of Rangpur - Gaibandha, Ulipur, Kamalpur and Chilmari. The headquarters of the sector was at Teldhala until October 10, then transferred to Mahendraganj.
• Major Abu Taher (October 10, 1971 – November 2, 1971(after battle of Kamalpur).
• Squadron Leader Hamidullah (Till Victory).
1. Mankarchar (Squadron Leader M. Hamidullah Khan).
2. Mahendraganj (Major Abu Taher; Lieutenant Mannan).
3. Purakhasia (Lieutenant Hashem).
4. Dhalu (Lieutenant Taher; Lieutenant Kamal).
5. Rangra (Matiur Rahman).
6. Shivabari (divided between junior commissioned officers of the EPR).
7. Bagmara (divided between junior commissioned officers of the EPR).
8. Maheshkhola (a member of the EPR).