It's reasonably accurate, yes, but of limited utility to the great majority of campaigns, the more so in that the Indian Army followed British command structure ... so, in effect, this is just a list of the Hindi names for such ranks. For a campaign set in colonial India or in the aftermath of the Raj, I'd want to see an outright article on the nature of John Company's military and its successors.
Yeah, I'm with Strolen. Sure, it's a stereotype - and how many stereotypes do we routinely employ, anyway? - but this EXPLAINS the stereotype. Too many people are far too ready to turn their noses up at subs that don't hit minimum (but undefined) levels of Quirky!, Flashy! or Unique!
Beyond which, c'mon, folks ... what's the psychology behind an adventurer, anyway? Who goes off from living nice, safe, quiet lives to run off and deal with horrors on a regular basis, sleep on the ground in haunted ruins and pretty much be assured of an early, violent death unless you have at least a little crazy in you?