He succeeded his father as the chief of the Sukerchakia Misl. To strengthen her position she married her daughter,
Raj Kaur to
Sahib Singh, son of
Gujjar Singh of the
Bhangi Misl and the other daughter,
Saher Kaur was married to
Sohel Singh. She later arranged for her son Maha Singh to be married to
Rajkumari Raj Kaur, daughter of
Raja Gajpat Singh of
Jind in 1774. By setting up these alliances she ensured the sympathies of the
Phulkians and the
Bhangis(who were jealous of the growing fame of her late husband); these matrimonial alliances helped her consolidate power. Desan Kaur and Maha Singh were assisted by her brothers Dal Singh of Akalgarh and Gurbaksh Singh as well as
Sardar Jai Singh Kanhaiya with whom Charat Singh once exchanged turbans with - a practice done to express solidarity with each other. Soon Maha Singh captured the
Rohtas Fort from Nur-ud-din Bamezai, a general of
Ahmad Shah Durrani and occupied Kotli Ahangaran, near
Sialkot. After this victory, he laid a four-month
siege to Rasool Nagar assisted by
Jai Singh Kanhaiya. While he was at battle, Raj Kaur affectionately known as
Mai Malwain gave birth to their only son. The child was named Budh Singh after their ancestor who received
amrit sanskar from
Guru Gobind Singh himself. On his return from
Rasulnagar, Maha Singh was presented with his son and to commemorate his victory the child's name was changed to Ranjit meaning "victor in battle") Singh (meaning "lion"). Mahan Singh distributed grains to every body who approached him, it was said that his good will was the reason behind the recovery of his son from smallpox. ==Military campaign==