[2] He led a selected band of armed soldiers against the troops under the command of the British East India Company.

[4] A British judicial officer offered a description of Kunwar Singh and described him as "a tall man, about six feet in height".

[5] He married the daughter of Raja Fateh Narayan Singh of the Deo Raj estate who belonged to the Sisodia clan of Rajputs.

Major Vincent Eyre relieved the town on 3 August, defeated Singh's force and destroyed Jagdishpur.

In March 1858, he occupied Azamgarh in North-Western Provinces (Uttar Pradesh) and managed to repel the initial British attempts to take the area.

The mantle of the old chief now fell on his brother Amar Singh II, who continued the struggle for a considerable time, running a parallel government in the district of Shahabad.

[10] Sir George Trevelyan, a British statesman and author noted about Kunwar Singh and the battle of Arrah in his book, The Competition Wallah, that:[12] Two facts may be deduced from the story of these operations - first that the besiegers of the house at Arrah were neither cowards nor bunglers; and the next that it was uncommonly lucky for us that Coer Singh was not forty years younger.George Bruce Malleson, a 19th-century English officer stationed in India during the rebellion of 1857 stated about Kunwar Singh:[13] One of the three natives of India thrown up to the surface by the mutiny, who showed any pretensions to the character of a strategist — the others being Tántia Topi and the Oudh Moulvi— Kúnwar Singh had carefully for borne to risk the fortunes of his diminished party which, however favorable might be its commencement, must certainly end in its complete defeat.To honour his contribution to India's freedom movement, the Republic of India issued a commemorative stamp on 23 April 1966.

[15] In 2017, the Veer Kunwar Singh Setu, also known as the Arrah–Chhapra Bridge, was inaugurated to connect north and south Bihar.

[16] In 2018, to celebrate 160th anniversary of Kunwar Singh's death, the government of Bihar relocated a statue of him to Hardinge Park.

Now quit our country !In the 1970s, a private landlord militia known as the 'Kuer Sena/Kunwar Sena' (Kunwar's Army) was formed by Rajput youth in Bihar to combat naxalite insurgents.

[19] A play by Jagdish Chandra Mathur titled Vijay Ki Vela (Moment of Victory) is based on the later part of Kunwar Singh's life.

[citation needed] In April 2022, Indian Home minister Amit Shah announced the installation of a statue commemorating Kunwar Singh at Ara, Bhojpur.