During the first AngloSikh war (1845-46), Fateh Singh remained in Lahore with General Gulab Singh Pahuvindia assigned to protecting the minor Maharaja Duleep Singh. Soon after the war, he was appointed commandant of the Suraj Mukhi corps. In 1847, he accompanied Lieut.Herbert Edwardes to Bannu, and served throughout the Multan campaign of 1848. After the annexation of the Punjab, he joined the police. Fateh Singh died in 1875.
References :
1. Suri, Sohan Lal, `Umdat-ut-Twarikh. Lahore, 1885-89
2. Griffin, Lepel, and C.F. Massy, Chiefs and Families of Note in the Punjab. Lahore, 1909
3. Gupta, Hari Ram, Punjab on the Eve of the First Sikh War. Chandigarh, 1955