civil war whistles

so it makes one think….were any whistles used in the civil war ?? Are reinactors using them today ??

The reason one wonders is that 1870 seems to be a threshold for whistles.

In the UK Yates put out a catalog of whistles in 1870, but before that ??? Well, Richard Porteous decades before – the Field Pipe, certainly for the military.

In the USA who made whistles prior to 1870 ??

True there is Banks and Brother ( Thadeus and Samual ) who invented the dual tube, thinwall. — 1864 ( right in the middle of the civil war time.

Perhaps another patent here or there.

However enough to supply the civil war ???

Perhaps wooden ones or horn or ???

Causes one to e-examine what was assumed. No other major whistle came on to the scene in the USA until 1881 when the BGI 601 bullet for hunters and the Bean police.

gotta look into this further huh ?? Your thoughts ??