In November 1943, 6 Squadron and later 8 Squadron were moved to Cox's Bazaar. By the end of February 1944, No 6 Squadron pilots had completed over 1,000 operational sorties, averaging 6 sorties a day per pilot, a record for the entire the Third TAF. Towards the end of March 1944, 4 Squadron joined the operations when it was moved first to Feni airfield, and then to Comilla in June to replace 6 Squadron. In March 1944, the squadron moved to Feni for operations against the Japanese. The role of the squadron was to provide close Air support to the XIV Army. it was from Feni that the squadron carried out its first operational sorties by providing fighter escort to Dakota, engaged in supply dropping missions in the northern Burma. From August 1944 to January 1945, No. 4 Squadron was based at Cox's Bazar and carried out CAS, interdiction and tactical recce operations.