I have at least one Catholic ancestor whose service in the American Revolution entitles me to join the DAR. He lived in Point Coupee, Louisiana, and fought with Governor Galvez against the Brits. We learn about that campaign in Louisiana history, about the capture of forts Kaskaskia, Cahokia and Vincennes, but I don't think anybody else learns it.
http://www.thecajuns.com/galvezrw.htm
That is indeed a little-known chapter in the Revolution! Thanks for it.