MD DANISH JAMAL

The Bangladesh Liberation War (Bengali: মুক্তিযুদ্ধ Muktijuddho) was an armed conflict pitting East Pakistan and India against West Pakistan. The war resulted in the secession of East Pakistan, which became the independent nation of Bangladesh.
The war broke out on 26 March 1971 as army units directed by West Pakistan launched a military operation in East Pakistan against Bengali civilians, students, intelligentsia, and armed personnel who were demanding separation of the East from West Pakistan. Bengali military, paramilitary, and civilians formed the Mukti Bahini (Bengali: মুক্তি বাহিনী "Liberation Army") 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.
On 16 December 1971, the allied forces of the Indian army and the Mukti Bahini defeated the West Pakistani forces deployed in the East. The resulting surrender was the largest in number of prisoners of war since World War II.