Chandrabir Kunwar together with his co-commander Bhaktibir Thapa led the so-called second unit of Gorkhali forces through Langurgarh route.

[10][2] Chandra Bir was appointed as Subba (governor) of one-third territories of Garhwal[11] and in replacement of Hasti Dal Shah.

[2][12] The appointment letter dated Ashadh Badi 2, 1862 Vikram Samvat states him to reach Srinagar and act according to the orders of Bada Kaji Amar Singh Thapa.

[2] He was appointed as governor of hill, Madhesh and Bhot divisions of Doti region by the royal letter dated Bhadra Sudi 11, 1864.

[13][note 2] The royal orders on Kartik Badi 1, 1865 Vikram Samvat shows Chandrabir as Sardar in Garhaun together with Parashuram Thapa for a brief period.

[17] Similarly, they were instructed through the same letter to maintain a check post for preventing the sale of children and not to impart injustices in any case.

[2] The death of Chandravir Kunwar was reported by his brother-in-law Kaji Ranajor Thapa to King Girvan Yuddha Bikram Shah through letter dated Baisakh Sudi 7, 1871 Vikram Samvat (April/May 1814).

[3] He received rice lands amounting 300 muris on Manachamal tenure through a royal order issued in Aswin Badi 13, 1862.