Religion played a major role in the American Revolution by offering a moral sanction for opposition to the British--an assurance to the average American that revolution was justified in the sight of God. As a recent scholar has observed, "by turning colonial resistance into a righteous cause, and by crying the message to all ranks in all parts of the colonies, ministers did the work of secular radicalism and did it better."     https://www.loc.gov/exhibits/religion/rel03.html

(War of 1812) . . ."Canadian churches were almost universally loyal to the Crown and extolled their parishioners to be likewise because they believed that England, not rebellious America, was the only truly Christian nation. They framed the war as a theological struggle to determine who would rule in the Americas and who was favoured by God. Thus, every battle had cosmic significance and military morality took on both political and eternal ramifications . . . "

Blasting out unfounded assumptions it seems.