Was the son of Bhai Narain Singh Gill: mother's name Chand Kaur. Farming was the occupation of the family which lived in the village of Kaleki, 5 km east of Bagha Purana in Moga tahsil (subdivision) of present-day Faridkot district.

Early in his life Hardit Singh went abroad to Malaya where he served as a policeman in Kuala Lumpur military police for five years, after which he returned to live in his native village. He happened to be in the village of Rode where a Jatha of Akali volunteers was stopping overnight on its way to Jaito, then in the throes of a Sikh religious agitation. He felt so moved by the enthusiasm of the Akali volunteers that he decided to stay on and join the agitation. As the Jatha reached the outskirts of Jaito on 21 February 1924, the state authority opened fire on it. Bhai Hardit Singh was hit in the head and fell down.

Source: Encyclopaedia of Sikhism, Harbans Singh