The troop nucleus of a native officer and twenty men was from the artillery of Shaikh Imam-ud-Din, who was the governor of the Sikh province of Kashmir.

Pearse, Madras Artillery was appointed in charge of the Hazara Mountain Train, in addition to his duties as the Assistant Commissioner.

On 3 November 1971, the regiment provided artillery support to 13 Rajputana Rifles in the capture of Telikhali (east of Jamalpur-Tura-Sherpur road).

At Kamalpur, it provided accurate artillery support to 1 Maratha Light Infantry and 13 Guards.

[7] During the capture of Kamalpur on 4 December 1971, Captain Vijai Pratap Singh of 4 Hazara Battery was the Forward Observation Officer with 13 Guards.