I have located a relative in the 1921 census (Charles Purcell [indexed as Parcell], b abt 1899 in Nantwich, Cheshire). He is in the British Army in India - piece RG 15/28121, if I interpret the image filename correctly. Unfortunately, his detail just tells me that he's a "Private" in the "Infantry" - no data about what unit he's in. (No soldier's number, either).
The address sheet for him says that he's at "Chanbattia Hill Depot" (though it might be "Chaubattia", apologies if necessary!), which has an address of Ranikhet, United Provinces, India. Nowhere on that sheet does it say what unit(s) are stationed there and the catalogue description for RG 15/28121 doesn't mention unit(s) either.
Anyone got any ideas of how to find what regiment / battalion / whatever he was in? I've only pulled down the one detail image, which is labelled as page 35 but I'm not about to start buying the 34 previous images just in case one says something about the unit.
Thanks for any ideas...