When looking at cleaning from a historical standpoint one must consider the time frame, location and if military or civilian.
In 1778 America (or for most of the period pre-1820 in the east) if out in the woods hunting one had to be careful. Shoot, reload and see if someone arrived with a motive other than helping you cut up the the deer.
From what I have read it is unlikely they used water in the field. Likely some tow with tallow on it then some dry tow to get out the tallow, then feather the vent and load again.
You don't want the Shawnee's (for example) arriving while you have a wet gun. Even if you are in your cabin.
Today, or in a military unit security is better due to the numbers present or a more peaceful scenario.
Water/water based cleaners are better but not always the best idea at least historically.
As a side note:
For years I had used various widow cleaners as a soap for BP cleaning solutions. Usually one of the Windex's with vinegar.
HOWEVER. Most formulas have now gone "GREEN". They are also, near as I have been able to determine virulently corrosive.
I had constant after rust problems until I finally wised up (after 3-4 sessions) and stopped using the "environmentally friendly" stuff.
I bought of those handy little gismos that clamps over the vent with a tube to run to a bucket for the swivel breech, use water or a weak solution 1:4 of the old blue windex to water, and virtually no after rusting.
As I have pointed out before soaps are corrosive to some greater or lessor extent. But then also aid cleaning. I used window cleaner for several gallons of cleaner over 2-3 decades and never had a problem until last year with the "new and improved" stuff. Widow cleaners rinse clean so they leave no residue (unless too environmentally friendly I guess) and never caused "problems" previous.
Anyway I am happy again with my cleaning which had REALLY had me wondering for a couple of months. No damage was done that I can tell since I use pretty good rust preventatives but getting red on the patch every time I wiped the oil out was a PITA.
A clear water rinse is a good idea with any use of wetting agents. I like to use a little wetting agent (non-environmetally friendly) since I use natural oils for patch lubes and the soap helps cut any such residue at least in my thinking
(?)
Dan