[Celtjew Libertarian]

The General is sorry to be informed that the foolish and wicked practice of profane cursing and swearing, a vice hitherto little known in our American Army is growing into fashion. He hopes that the officers will, by example as well as influence, endeavor to check it and that both they and the men will reflect that we can little hope of the blessing of Heaven on our army if we insult it by our impiety and folly. Added to this it is a vice so mean and low without any temptation that every man of sense and character detests and despises it.

--George Washington

Was that order before or after he encountered General Charles Lee, retreating from Monmouth Court House?

[blues_guitarist]

It was before . . .
August 1776

Battle of Monmouth . . .
June 1778

That having been said, I don't think there's any fair comparison between what a person might utter in a fit of rage and what passes as acceptable language.
Standards are important for society as a whole. A lack of decorum can quickly erode to brutality.