In the battle of Sirhind fought at Chappar Chiri in May 1710, Baj Singh was in command of the right wing of Banda Singh`s army. He faced Nawab Wazir Khan in the battle striking his horse down with a lance. As the battle was won, Baj Singh was named administrator of the town. Baj Singh was captured at Gurdas Nangal in December 1715 and taken to Delhi where he was executed in June 1716 along with Banda Singh and his other companions.
References :
1. Bharigu, Ratan Singh, Prachin Parith Prakash. Amritsar, 1962
2. Gian Singh, Giani, Twankh Guru Khalsst. Patiala, 1970
3. Ganda Singh, Banda Singh Bahadur. Amritsar, 1935