Yep. The were protestants and their belief in God and His kingdom is what drove them.

It's also why they didn't fire the first shot. They knew God would only bless them if they were not the aggressors in the situation. They tried all diplomatic processes as well as asking England to repent of their unbiblical taxation prior.

Fun fact: In England they called the American Revolution the "Protestant Rebellion" as many of the leaders were Pastors and Preachers.