<P> The second commission was known as Indo - Pakistani War of 1971 Prisoners of War Investigation conducted solely by the Pakistani government that was to be determine the numbers of Pakistani military personnel who surrendered including the number of civilian POWs . The official number of the surrendered military personnel was soon released by the Government of Pakistan after the war was over . </P> <P> On 2 July 1972, the Indo - Pakistani summit was held in Simla, Himachal Pradesh, India were the Simla Agreement was reached and signed between the President Zulfikar Ali Bhutto and Prime Minister Indira Gandhi as a governments of each state playing a depository role . The treaty provided insurance to Bangladesh that Pakistan recognized Bangladesh's sovereignty in exchange for the return of the Pakistani POWs as India was treating the war prisoners in accordance to Geneva Conventions promulgated in 1925 . In mere five months, India systematically released more than ~ 90,000 war prisoners with Lieutenant - General A.A.K. Niazi being the last war prisoner to be handed over to Pakistan . </P> <P> The treaty also gave back more than 13,000 km2 of land that Indian Army had seized in Pakistan during the war, though India retained a few strategic areas (including Turtuk, Dhothang, Tyakshi (earlier called Tiaqsi) and Chalunka of Chorbat Valley), which was more than 804 km2 . The Indian hardliners, however, felt that the treaty had been too lenient to President Bhutto, who had pleaded for leniency, arguing that the fragile stability in Pakistan would crumble if the accord was perceived as being overly harsh by Pakistanis and that he would be accused of losing Kashmir in addition to the loss of East Pakistan . As a result of which Prime Minister Indira Gandhi was criticized by a section in India for believing Bhutto's "sweet talk and false vows" while the other section claimed it successful, for not letting it to fall into "Versailles Syndrome" trap . </P> <P> In 1973, India and Pakistan reached another compromised when both countries signed trilateral agreement with Bangladesh that actually brought the war prisoners, non-Bengali and Pakistan - loyaled Bengali bureaucrats and civilian servants to Pakistan . The Delhi Agreement witnessed the mass population transfer since the partition of India in 1947 . </P>

The western front the indo pakistan war 1971