how was the century set up in indian camps; and drum message sent by drums.in the white indian books. they tell who what etc etc but what the true story
-By "century," do you mean "sentry" i.e."lookout", "night guard", etc.?
If so, to my (50 yrs +) knowledge, there were no such regularly assigned duties.
- Of the latter, again to my knowledge, there were none (bad "white" books, bad. Go sit in the corner), other than the basic binary: you hear drums, it means someone's there; you don't hear drums, it means something else.