sentences:  After participating in the Sector Commanders Conference held between July 11~17th 1971, BDF C-in-C Colonel M. A. G. Osmani transferred Hamidullah to Teldhala, BDF Sector 11 HQ.During that time he received a battlefield promotion to Squadron Leader.Bangladesh Forces Sector 11 headquarters was under the command of BDF Commander Lt. Col. Ziaur Rahman, who appointed Hamidullah BDF Commander of Mankachar Sub-Sector 1, with additional charge of independent Roumari area.