Mid night, in 25 March, 1971, Pakistan army started a killing mission called 'Operation Search Light' on 7.5 crore Bangladeshi people. They arrested Bangabandu Sheikh Mujibur Rahman the leader of Bangladesh.
They attacked on universities, school, college, EPR (East Pakistan Rifels, Boarder guard of Pakistan), police lines and all other villages, town and cities. They started killing and burning everywhere. One million people crossed the border in that night.
26 March 1971, Bangladeshi Freedom Fighter started a bloody liberation war against the Pakistan military. And finally we got success on 16 December 1971.
About 1 crore people made refugee during 9 months. Most of road, calvert, bridge and other construction were destroyed then.
About 3 million people sacrificed their lives to protect Bangladesh and 2 lakh women were raped by depraved Pakistan army during the 9 months.
We get a costly freedom, because they operated one of the largest genocide of the world history in Bangladesh only among 9 months.
Libaration war of Bangladesh:
Leader of Bangladesh: Sheikh Mujibur Rahman
Commander-in-chief: General M. A. G. Osmani
Commanders of Brigeds:
S Force: Major K M Shafiullah,
K Force: Major General Khaled Mosharraf
Z Force: Mazor Ziaur Rahman