Hey Tom… sounds like the “Boom-Chicka” pattern. This lesson might help: http://www.tomasmichaud.com/country-guitar-strum/
If you are looking for something more or different I’d be glad to add it to my list of lessons to create. Let me know.
It would help by the way if you added this to the Lesson Request Section. That way others can comment also, and it will be easier to find.