KĀHN SIṄGH was, like his father Mirzā Siṅgh, in the service of Jai Siṅgh Kanhaiyā before joining Raṇjīt Siṅgh's army. He was made an officer in the irregular cavalry. He fought along with his regiment at Kasūr and in the Kāṅgṛā campaign of 1809. Kāhn Siṅgh was placed under Desā Siṅgh Majīṭhīā when the latter was made governor of the hill districts between the rivers Beās and Sutlej.