But after three years of Boer tactics, irregular methods, hopelessness, evident failure, the rise into power of men who were not gentlemen, petty peculation and fraud in the rebel army, apparent deterioration in character of the men in the rebel congress, the undignified runaway, wandering habit of that congress with its papers hauled from one refuge to another in a wagon, and similar things which make a deep impression on men of a certain kind of education and refinement, he saw so clearly the unutterable folly and wickedness of the attempt at independence that he could stand it no longer.
There were many others who thought just as he did; but they usually either went to live in England or Canada or kept quiet in semi-concealment waiting until the power of Britain should restore order and good government to the colonies. But Duché, feeling that he was in somewhat of a public position, argued out the whole subject in a long letter to General Washington, calling on him in the name of God and humanity to put an end to the frightful state of affairs so mutually destructive to the best interests of both the colonies and England.
He was horrified he said to find that rather than give up the idol independence the rebels "would deluge this country in blood." In short he was horrified at the Krugerism of Washington who intended to make England "pay a price that would stagger humanity." As to the rebel army its existence depended on one man. Most of its officers were from "the lowest of the people." "Take away those who surround your person, how few are there that you can ask to sit at your table." The rebels had hoped for aid from France: but after three years of waiting it had not come and there were no signs of it. The whig party in England was growing smaller. The whole English nation, "all orders and ranks of men are now unanimous and determined to risk their all on the contest."
"Under so many discouraging circumstances, can virtue, can honor, can the love of your country prompt you to persevere. Humanity itself (and sure I am humanity is no stranger to your breast) calls upon you to desist. Your army must perish for want of common necessaries, or thousands of innocent families must perish to support them. Wherever they encamp the country must be impoverished. Wherever they march the troops of Britain will pursue and must complete the devastation which America herself has begun."