Kunwar Singh became the leader of the rebellion in Bihar after the outbreak of the 1857 uprising, at the age of 80. He mobilized local forces and led several successful engagements against the British, demonstrating remarkable strategic acumen despite his age and health challenges.

He personally commanded troops in battles near Jagdishpur and other regions, often leading charges and inspiring soldiers with his courage. His efforts kept large areas of Bihar out of British control for several months, showcasing his organizational and leadership skills.

Kunwar Singh died in 1858 during the rebellion, leaving behind a legacy of bravery and patriotism. Today, he is celebrated as one of the key leaders of the 1857 revolt, remembered for his dedication to India’s struggle for freedom and his ability to unite local populations against colonial forces.