Battle of Kamalpur The Battle of Kamalpur , launched against the Pakistan Army , is one of the most significant battles fought by Bangladesh Forces in 1971 , besides Chilmari Landing , during its war of independence from Pakistan . The Pakistan Army set up a military camp at Kamalpur which was attacked by 1st East Bengal Regiment of Z Force several times . The first attack was made on June 12 , 1971 , second attack on July 31 , 1971 . Finally , on December 4 , Pakistan Army had to withdraw and fell back to their headquarters at Jamalpur . After an attack by the Bangladesh Forces , Pakistani troops were defeated and Jamalpur became free . The Camp at Kamalpur . Kamalpur , a border area , was known as the gateway to Dhaka from the northern sector under Sector 11 , the central sector and the largest one of Bangladesh Forces . It was situated on the mouth of the old Brahmaputra and on the road link with Mymensingh via Jamalpur . Pakistan Army set up a military camp at Kamalpur . This camp was tactically crucial for the Pakistan Army because its fall can cause the Pakistan Army lose control over the whole Jamalpur - Dhaka region . The Pakistani troops made concrete bunkers which contained shell proof roofs . To provide communication between bunkers , they dug communication trenches . The camp perimeter included Booby trap s and mine fields as defense . About two companies of 31 regiment excluding razakars constituted the enemy force . Attacks on Kamalpur Camp . On June 12 , 1971 , the first attack was launched by Mukti Bahini at Kamalpur Camp . Pakistani troops tried to enter the villages of Sarishabari Upazila of Jamalpur district but failed as the villagers confronted them . Many people in the villages martyred . While retreating , the Pakistan Army set fire in the villages . Under the command of Commanding Officer Major Moinul Hussain Chowdhury , the second attack was launched on July 31 ( at night on August 1 ) , 1971 . The attack was made with two companies Delta and Bravo from the North – East of the enemy camp . Captain Salahuddin Momtaz commanded " Delta " on the left and Captain Hafiz commanded " Bravo " on the right . As the troops were moving towards the enemy post , the enemy artillery started firing heavily . As a result , the progress of the two companies became slow and encountered demise . The troops continued moving forward and entered the outer perimeter of the enemy camp . Though casualties were increasing , the freedom fighters made progress through the minefield . At one stage of the fight , two shells dropped in front of Captain Salahuddin Momtaz and killed him . Fortunately , Captain Hafiz could escape death . In the morning at 7 : 30 , Major Moin , the battalion commander of 1st East Bengal Regiment ordered the battalion to retreat . Casualties . In the battle on July 31 , 1971 , 35 freedom fighters were killed . During the battle of Jamalpur , 10 soldiers of one Maratha light infantry and one soldier of 13 Guard regiment of India were killed . On the other hand , the casualties of the Pakistan army were 235 , 23 were injured . In addition , freedom fighters captured 61 of the Pakistani soldiers . The second in command of 51 Baluch Regiment surrendered with 376 soldiers to the freedom fighters .