The Indo-Pakistani War of 1971 was a military conflict between India and Pakistan. Indian, Bangladeshi and international sources consider the beginning of the war to be Operation Chengiz Khan, Pakistan's 3 December 1971 pre-emptive strike on 11 Indian airbases. Lasting just 13 days it is considered one of the shortest wars in history.

During the course of the war, Indian and Pakistani forces clashed on the eastern and western fronts. The war effectively came to an end after the Eastern Command of the Pakistani Armed Forces signed the Instrument of Surrender, on 16 December 1971 following which East Pakistan seceded as the independent state of Bangladesh. Between 90,000 and 93,000 members of the Pakistan Armed Forces including paramilitary personnel were taken as Prisoners of War by the Indian Army It is estimated that between 2,000,000 and 3,000,000 civilians were killed in Bangladesh, and up to four hundred thousand women raped by the Pakistani armed forces, especially Hindus. As a result of the conflict, a further eight to ten million people fled the country at the time to seek refuge in neighbouring India.

The Bangladesh Liberation War⁽ⁱ⁾ (Bengali: মুক্তিযুদ্ধ Muktijuddho) was an armed conflict over a duration of about 9 months, putting East Pakistan and India against the State of Pakistan. The war started on 26 March 1971 between the State of Pakistan and East Pakistan, India intervened on 3 December 1971. Armed conflict ended on 16 December 1971 and resulted in the secession of East Pakistan, which became the independent nation of Bangladesh.

The war broke out when army units directed by the State of Pakistan (then controlled by West Pakistan) launched a military operation called Operation Searchlight in East Pakistan against Bengali civilians, students, intelligentsia, and armed personnel who were demanding for the military regime to honor the results of the first ever 1970 democratic elections in Pakistan won by an East Pakistan party or to allow separation of the East from West Pakistan. Bengali military, paramilitary, and civilians formed the Mukti Bahini (Bengali: মুক্তি বাহিনী "Liberation Army") on March 26, 1971, in response to Operation Searchlight and used guerrilla warfare tactics to fight against the West Pakistan army. India provided economic, military and diplomatic support to the Mukti Bahini rebels, leading West Pakistan to launch Operation Chengiz Khan, a pre-emptive attack on the western border of India which started the Indo-Pakistani War of 1971.

Field Marshal Sam Hormusji Framji Jamshedji Manekshaw, MC "Sam Bahadur" (lit. Sam the Brave) (3 April 1914 – 27 June 2008) was a Field Marshal of the Indian Army. His distinguished military career spanned four decades and five wars. Manekshaw rose to be the 8th chief of staff of the Indian Army in 1969 and under his command, Indian forces concluded a victorious campaign, the 1971 Indo-Pakistani War, that led to the liberation of Bangladesh.

Sam Manekshaw was the first of only two Indian military officers to hold the highest rank of Field Marshal in the Indian Army (the other being Field Marshal K M Cariappa).

Manekshaw was born in Amritsar, Punjab to Parsi parents, Hormusji Manekshaw, a doctor, and his wife Heerabai, who moved to the Punjab from the small town of Valsad on the Gujarat coast. After completing his schooling in Amritsar and Sherwood College (Nainital), with distinction in the School Certificate examination of the Cambridge Board, he asked his father to send him to London to study medicine. When his father refused to send him till he was older, in an act of rebellion Manekshaw appeared for and qualified in the entrance examination for enrolment into the Indian Military Academy (IMA), Dehradun and as a result became part of the first intake of 40 cadets on 1 October 1932. He graduated from the IMA on 4 February 1934 and was commissioned as a second lieutenant in the Indian Army.

Indira Priyadarshini Gandhi (Hindi: इंदिरा प्रियदर्शिनी गांधी Indirā Priyadarśinī Gāndhī  listen (help·info), née Nehru; 19 November 1917 – 31 October 1984) was an Indian politician who served as the third Prime Minister of India for three consecutive terms (1966–77) and a fourth term (1980–84). Gandhi was the second female head of government in the world after Sirimavo Bandaranaike of Sri Lanka, and she remains as the world's second longest serving female Prime Minister as of 2012. She was the first woman to become prime minister in India.

Gandhi was the only child of Jawaharlal Nehru, the first prime minister of independent India. She adhered to the quasi-socialist policies of industrial development that had been begun by her father. Gandhi established closer relations with the Soviet Union, depending on that nation for support in India’s long-standing conflict with Pakistan. She was also the only Indian Prime Minister to have declared a state of emergency in order to 'rule by decree' and the only Indian Prime Minister to have been imprisoned after holding that office. She was assassinated by her Sikh bodyguards in retaliation for ordering Operation Blue Star.