On 16 December 1971, under the command of Lt. General J. S. Arora, elements of the three corps of the Indian Army that had invaded East Pakistan entered Dhaka and forced Pakistani forces to surrender, one day after the conclusion of the Battle of Basantar. After Pakistan's Lt General A. A. K. Niazi signed the Instrument of Surrender, India took more than 90,000 Pakistani prisoners of war. By the time of the signing, 11,000 Pakistani soldiers had been killed in action, while India suffered 3,500 battle-related deaths. In addition, Pakistan lost 220 tanks during the battle compared to India's 69.