Changes

*''The historical record Historical Record of the 4th Sikh Infantry, Punjab Frontier Force''. Lahore: Punjab Govt Press, 1887.: Available at the British Library, reference: IOR/L/MIL/17/5/4305 *''The Frontier Force Regiment'', compiled by Brigadier W. E. H. Condon 1962. Available at the [[British Library]] UIN: BLL01001795357