The answer is well-known to all who have followed history and the events in the First War 0f Independence of 1857.
Mangal Pandey was the sepoy who fired the first shot against the British starting the ‘1857 Sepoy Mutiny’ as the British called it. It was on 29th March 1857. The war started, escalated and many places, including cantonments were captured by these freedom fighters. But the gains could not be sustained and the British, with their better arms and discipline recaptured every thing. Many sepoys were killed. Many were captured and killed.
And Mangal Pandey was one of them. He was hanged on 8th April 1857 to show an example to other sepoys.
We have won freedom with the sacrifice of lakh and lakh such martyrs and ordinary people. My homage to Mangal Pandey!