To establish a prominent place for himself among the Sikhs Charat Singh built a fort at Amritsar to the north of the city."

– Hari Ram Gupta[8] In 1761, After the Third Battle of Panipat, Ahmad Shah Durrani sent his general Nur-ud-din to punish the Sikhs.

He crossed the river Jhelum in August 1761 at Khushab and marched up the left bank of the river, He destroyed three largest towns of the Doab, Bhera, Miani and Chak Sanu, The first two towns rose from the ruins afterwards, while the third remained deserted.

Afghans, 12,000 in number, fled to Sialkot, which was immediately invested by Charat Singh, Nur-ud-din escaped on the eighth day to Jammu in the disguise of a beggar.

[9] Charat Singh's victory over Nur-ud -din deeply perturbed Khwajah Abed Khan, Durrani's governor of Lahore.

On this occasion Charat Singh played a dominant role in resisting the enemy and raising the spirit of the Sikhs.

[11] After the conquest of Rohtas, Charat Singh then subdued the rebellion chief's and zamindars of the neighborhood and seized the parganahs of Dhanni, Pothohar, Chakwal, Jalalpur, and sayyidpur, after which the whole district made submission to him,[12] In 1774, he invaded Jammu with Jai Singh of the Kanheya Misl to aid the eldest son of Ranjit Deo, Brij Raj Deo, against his father.

A samadhi (Indic cenotaph tomb) of Charat Singh is believed by some to be located at Gujranwala, near the Sheranwala Bagh.

[15][16][17] This theory is further refuted by the Umdat-ut-Tawarikh, a chronicle on the reign of Ranjit Singh and his successors by Sohan Lal Suri, the court recorder of the Sikh Empire.