The Battle of Sylhet (Bengali: সিলেটের যুদ্ধ Silet-er Juddho) was a major battle fought between the advancing Mitro Bahini and the Pakistani defences at Sylhet during the Bangladesh Liberation War. The battle took place 7 December and 15 December and was the Indian Army's first heliborne operation. It was a succession of the Battle of Gazipur in Kulaura. Then, on December 16th, the whole enemy garrison of 8000 men surrendered to Brigade Commander 'Bunty' Quinn.