The Anglo-Gorkha War begins

Border disputes in the Tarai brought war. Of the four British columns, the two that matter for Himachal were Major-General Rollo Gillespie's, which was destroyed at Kalanga (Nalapani) where Gillespie was killed on 31 October 1814, and Major-General David Ochterlony's, which advanced against Amar Singh Thapa in the Shimla hills.

Ochterlony's method was to detach the hill chiefs from the Gorkhas by promising restoration — which is exactly what the sanads of 1815 delivered.