As the Commander in Chief has been apprized of a design form’d for the observance of that ridiculous and childish custom of burning the Effigy of the pope – He cannot help expressing his surprise that there should be Officers and Soldiers in this army so void of commons sense, so not so see the impropriety of such a step at this Juncture; at a Time when we are soliciting, and have really obtain’d, the friendship and alliance of the people of Canada, whom we ought to consider as Brethren embarked in the same Cause.. The defence of the general Liberty of America. At such a juncture, and in such Circumstance, to be insulting their Religion, is so monstrous, as not to be suffered or excused; indeed instead of offering the most remote insult, it is our duty to address public thanks to these our Brethren, as to them we are so much indebted for every late happy Success over the common Enemy in Canada.
-- from an order issued November 5, 1775, banning the "celebration" of Guy Fawkes' Day (h/t to Fr. Rutler)
(Click here for a discussion of Washington's possible deathbed conversion to the Catholic faith)