But alas, swearing abounds, all classes swear

From 1776 by David McCulough.  Page 123.

“But the city had greatly changed. It had become an armed camp, and thousands of people—perhaps a third of the population—had fled, fearing it was soon to be the scene of terrible calamity. One would “think the city almost evacuated,” wrote a dispirited resident. Business was at a standstill.

Large numbers of troops were quartered in vacant buildings and many of the finest mansions. (“Oh, the houses of New York, if you could see the insides of them!” grieved another resident.) King’s College, west of the Commons, one of the largest, handsomest buildings in town, had been taken over as an army hospital, once the library books were removed, lest the soldiers burn them for fuel.

For the troops from New England a roof overhead of any kind seemed the height of luxury, and New York, however changed, a center of wonders. Joseph Hodgkins decided, “This city York exceeds all places that ever I saw,” though he found the living “excessive dear.”

“They have all the simplicity of ploughmen,” a New Yorker wrote of the Yankee soldiers. And according to one local paper, the New York Packet, they were unexpectedly well behaved, “their civility to the inhabitants “very commendable.” They attended prayers “evening and morning regularly,” their officers setting the example, the paper noted. “On Lord’s day they attend public worship twice, and their deportment in the house of God is such as becomes the place.”

But an earnest young Presbyterian chaplain with the New Jersey troops, a graduate of the College of New Jersey at Princeton, Philip Vickers Fithian, found the level of piety alarmingly below his expectations and worried what the consequences might be to the American cause of so many of all ranks so habitually taking the name of the Lord in vain. “But alas, swearing abounds, all classes swear,” he noted sadly.