Instrument of Surrender (1971) in the context of Victory Day (Bangladesh)

The Indo-Pakistani war of 1971, also known as the third Indo-Pakistani war, was a military confrontation between India and Pakistan that occurred during the Bangladesh Liberation War in East Pakistan from 3 December 1971 until the Pakistani capitulation in Dhaka on 16 December 1971. The war began with Pakistan's Operation Chengiz Khan, consisting of preemptive aerial strikes on eight Indian air stations. The strikes led to India declaring war on Pakistan, marking their entry into the war for East Pakistan's independence, on the side of Bengali nationalist forces. India's entry expanded the existing conflict with Indian and Pakistani forces engaging on both the eastern and western fronts.

Thirteen days after the war started, India achieved a clear upper hand, and the Eastern Command of the Pakistan military signed the instrument of surrender on 16 December 1971 in Dhaka, marking the formation of East Pakistan as the new nation of Bangladesh. Approximately 93,000 Pakistani servicemen were taken prisoner by the Indian Army, which included 79,676 to 81,000 uniformed personnel of the Pakistan Armed Forces, including some Bengali soldiers who had remained loyal to Pakistan. The remaining 10,324 to 12,500 prisoners were civilians, either family members of the military personnel or collaborators (Razakars).

The India–Pakistan war of 1971, also known as the third Indo-Pakistani war, was a military confrontation between India and Pakistan that occurred during the Bangladesh Liberation War in East Pakistan from 3 December 1971 until the Pakistani capitulation in Dhaka on 16 December 1971. The war began with Pakistan's Operation Chengiz Khan, consisting of preemptive aerial strikes on eight Indian air stations. The strikes led to India declaring war on Pakistan, marking their entry into the war for East Pakistan's independence, on the side of Bengali nationalist forces. India's entry expanded the existing conflict with Indian and Pakistani forces engaging on both the eastern and western fronts.

Thirteen days after the war started, India achieved a clear upper hand, and the Eastern Command of the Pakistan military signed the instrument of surrender on 16 December 1971 in Dhaka, marking the formation of East Pakistan as the new nation of Bangladesh. Approximately 93,000 Pakistani servicemen were taken prisoner by the Indian Army, which included 79,676 to 81,000 uniformed personnel of the Pakistan Armed Forces, including some Bengali soldiers who had remained loyal to Pakistan. The remaining 10,324 to 12,500 prisoners were civilians, either family members of the military personnel or collaborators (Razakars).

Amir Abdullah Khan Niazi HJ & Bar SPk SK MC (1915 – 2004), commonly known as General Niazi, was a Pakistani military officer. During the Bangladesh War of Independence and the Indo-Pakistani War of 1971, he commanded the Pakistani Eastern Command in East Pakistan (now Bangladesh). He signed the instrument of surrender as on 16 December 1971, his forces had to surrender to the Indian Army's Eastern Command's commander Lieutenant General Jagjit Singh Aurora by the order of the then President of Pakistan Yahya Khan.

Niazi's area of responsibility comprised the defense of East Pakistan from India during the war in 1971. His surrender in Dhaka effectively ended the war. The result was an Indian victory as well as the independence of Bangladesh.

The Pakistani prisoners of war in the Indo-Pakistani war of 1971 were the servicemen deployed in the Eastern Command of the Pakistan armed forces who were held in by the Indian Army.

Pakistan's Yahya administration conveyed their intentions to retreat from their eastern wing to the United Nations on 10 December 1971, and a formal surrender was submitted and accepted when the Commander of Eastern Command and Governor of East Pakistan, Lieutenant-General A. A. K. Niazi, signed an instrument of surrender with his counterpart, Lieutenant General Jagjit Singh Aurora, GOC-in-C of Eastern Command, on 16 December 1971.